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    Sir Butter

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    Featured collection

    Mushrooms

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    Item preview, Common puffball designed and sold by Sir Butter.
    Common puffball Sticker
    $2.38
    $3.17 (25% off)
    Item preview, Giant Puffball designed and sold by Sir Butter.
    Giant Puffball Relaxed T-Shirt
    $19.79
    $26.39 (25% off)
    Item preview, orange birch bolete designed and sold by Sir Butter.
    orange birch bolete Throw Blanket
    $32.24
    $42.98 (25% off)
    Item preview, Mushroom envelop stamp designed and sold by Sir Butter.
    Mushroom envelop stamp Oversized T-Shirt
    $20.99
    $29.99 (30% off)
    Item preview, Lake frog designed and sold by Sir Butter.
    Lake frog Canvas Print
    $53.75
    $67.19 (20% off)
    Item preview, Magical golden mushroom designed and sold by Sir Butter.
    Magical golden mushroom Poster
    $16.19
    $21.59 (25% off)
    Item preview, King Oyster designed and sold by Sir Butter.
    King Oyster Essential T-Shirt
    $17.99
    $23.99 (25% off)
    Item preview, Inky cap mushroom designed and sold by Sir Butter.
    Inky cap mushroom Essential T-Shirt
    $17.99
    $23.99 (25% off)

    Collections

    5 collections

    Mushrooms

    Space

    Flowers

    patterns

    clouds☁️

    Shop

    73 items
    73 items
    Item preview, Moominvalley River designed and sold by Sir Butter.
    Moominvalley River Coasters (Set of 4)
    $11.51
    $15.35 (25% off)
    Item preview, Common puffball designed and sold by Sir Butter.
    Common puffball Essential T-Shirt
    $17.99
    $23.99 (25% off)
    Item preview, James Sunderland Lain reflection designed and sold by Sir Butter.
    James Sunderland Lain reflection Greeting Card
    $4.68
    $6.24 (25% off)
    Item preview, cottagecore swing designed and sold by Sir Butter.
    cottagecore swing Poster
    $16.19
    $21.59 (25% off)
    Item preview, Gassy Webcap designed and sold by Sir Butter.
    Gassy Webcap Fitted V-Neck T-Shirt
    $20.69
    $27.59 (25% off)
    Item preview, Sky Blue mushroom designed and sold by Sir Butter.
    Sky Blue mushroom Long Sleeve T-Shirt
    $20.24
    $26.99 (25% off)
    Item preview, Sunset clouds designed and sold by Sir Butter.
    Sunset clouds Sticker
    $2.38
    $3.17 (25% off)
    Item preview, Ruby Bonnet designed and sold by Sir Butter.
    Ruby Bonnet Sticker
    $2.38
    $3.17 (25% off)
    Item preview, Inky Cap designed and sold by Sir Butter.
    Inky Cap Throw Blanket
    $32.24
    $42.98 (25% off)
    Item preview, Mycena Rosea designed and sold by Sir Butter.
    Mycena Rosea Throw Pillow
    $18.44
    $24.59 (25% off)
    Item preview, Death cap designed and sold by Sir Butter.
    Death cap Photographic Print
    $9.68
    $12.11 (20% off)
    Item preview, autumn skullcap designed and sold by Sir Butter.
    autumn skullcap Sticker
    $2.38
    $3.17 (25% off)
    Item preview, Daisy designed and sold by Sir Butter.
    Daisy Poster
    $16.19
    $21.59 (25% off)
    Item preview, Magical golden mushroom designed and sold by Sir Butter.
    Magical golden mushroom Classic T-Shirt
    $16.79
    $23.99 (30% off)
    Item preview, Fly Agaric designed and sold by Sir Butter.
    Fly Agaric Oversized T-Shirt
    $20.99
    $29.99 (30% off)
    Item preview, Liberty Cap designed and sold by Sir Butter.
    Liberty Cap Poster
    $16.19
    $21.59 (25% off)
    Item preview, Waxcap mushroom designed and sold by Sir Butter.
    Waxcap mushroom Mouse Pad
    $14.03
    $18.71 (25% off)
    Item preview, delicatula integrella designed and sold by Sir Butter.
    delicatula integrella Sticker
    $2.38
    $3.17 (25% off)
    Item preview, Clouds Drawing designed and sold by Sir Butter.
    Clouds Drawing Sticker
    $2.38
    $3.17 (25% off)
    Item preview, Amethyst Deceiver designed and sold by Sir Butter.
    Amethyst Deceiver Pin
    $3.36
    $4.20 (20% off)
    Item preview, Penny Bun designed and sold by Sir Butter.
    Penny Bun Framed Art Print
    $72.95
    $91.19 (20% off)
    Item preview, Wood Blewit designed and sold by Sir Butter.
    Wood Blewit Essential T-Shirt
    $17.99
    $23.99 (25% off)
    Item preview, Fly Agaric designed and sold by Sir Butter.
    Fly Agaric Spiral Notebook
    $12.47
    $15.59 (20% off)
    Item preview, Blue Milk Cap designed and sold by Sir Butter.
    Blue Milk Cap Boxy T-Shirt
    $20.99
    $29.99 (30% off)
    Item preview, Black Poplar designed and sold by Sir Butter.
    Black Poplar Classic T-Shirt
    $16.79
    $23.99 (30% off)
    Item preview, orange birch bolete designed and sold by Sir Butter.
    orange birch bolete Sticker
    $2.38
    $3.17 (25% off)
    Item preview, Garfield x Hatsune Miku designed and sold by Sir Butter.
    Garfield x Hatsune Miku Sticker
    $2.38
    $3.17 (25% off)
    Item preview, Black Amanita designed and sold by Sir Butter.
    Black Amanita Classic T-Shirt
    $16.79
    $23.99 (30% off)
    Item preview, Liberty Cap designed and sold by Sir Butter.
    Liberty Cap Throw Blanket
    $32.24
    $42.98 (25% off)
    Item preview, Chanterelle designed and sold by Sir Butter.
    Chanterelle Poster
    $16.19
    $21.59 (25% off)
    Item preview, Parasol designed and sold by Sir Butter.
    Parasol Classic T-Shirt
    $16.79
    $23.99 (30% off)
    Item preview, Cremini designed and sold by Sir Butter.
    Cremini Fitted V-Neck T-Shirt
    $20.69
    $27.59 (25% off)
    Item preview, Blue Pinkgill designed and sold by Sir Butter.
    Blue Pinkgill Poster
    $16.19
    $21.59 (25% off)
    Item preview, wood blewit designed and sold by Sir Butter.
    wood blewit Poster
    $16.19
    $21.59 (25% off)
    Item preview, Vintage leaf designed and sold by Sir Butter.
    Vintage leaf iPhone Tough Case
    $26.10
    $34.80 (25% off)
    Item preview, Shiitake Fungus designed and sold by Sir Butter.
    Shiitake Fungus Essential T-Shirt
    $17.99
    $23.99 (25% off)
    Item preview, the sickener designed and sold by Sir Butter.
    the sickener Photographic Print
    $9.68
    $12.11 (20% off)
    Item preview, Green pepe designed and sold by Sir Butter.
    Green pepe Premium Oversized Hoodie
    $43.19
    $57.59 (25% off)
    Item preview, Blue milk cap designed and sold by Sir Butter.
    Blue milk cap Sticker
    $2.38
    $3.17 (25% off)
    Item preview, Black poplar designed and sold by Sir Butter.
    Black poplar Sticker
    $2.38
    $3.17 (25% off)
    Item preview, Mushroom envelop stamp designed and sold by Sir Butter.
    Mushroom envelop stamp Sticker
    $2.38
    $3.17 (25% off)
    Item preview, orange pore fungus designed and sold by Sir Butter.
    orange pore fungus Sticker
    $2.38
    $3.17 (25% off)
    Item preview, King Oyster designed and sold by Sir Butter.
    King Oyster Classic T-Shirt
    $16.79
    $23.99 (30% off)
    Item preview, Inky cap mushroom designed and sold by Sir Butter.
    Inky cap mushroom Poster
    $16.19
    $21.59 (25% off)
    Item preview, Lake frog designed and sold by Sir Butter.
    Lake frog Sticker
    $2.38
    $3.17 (25% off)
    Item preview, wood blewit designed and sold by Sir Butter.
    wood blewit Classic T-Shirt
    $16.79
    $23.99 (30% off)
    Item preview, Parasol designed and sold by Sir Butter.
    Parasol Classic T-Shirt
    $16.79
    $23.99 (30% off)
    Item preview, sun behind clouds designed and sold by Sir Butter.
    sun behind clouds Canvas Print
    $53.75
    $67.19 (20% off)
    Item preview, Fly Agaric designed and sold by Sir Butter.
    Fly Agaric Sticker
    $2.38
    $3.17 (25% off)
    Item preview, orange birch bolete designed and sold by Sir Butter.
    orange birch bolete Relaxed T-Shirt
    $19.79
    $26.39 (25% off)
    Item preview, Cremini designed and sold by Sir Butter.
    Cremini Canvas Print
    $53.75
    $67.19 (20% off)
    Item preview, Penny Bun designed and sold by Sir Butter.
    Penny Bun Essential T-Shirt
    $17.99
    $23.99 (25% off)
    Item preview, Black Amanita designed and sold by Sir Butter.
    Black Amanita Poster
    $16.19
    $21.59 (25% off)
    Item preview, sunflower pattern designed and sold by Sir Butter.
    sunflower pattern Poster
    $16.19
    $21.59 (25% off)
    Item preview, Sunflower designed and sold by Sir Butter.
    Sunflower Poster
    $16.19
    $21.59 (25% off)
    Item preview, Isaac Newton designed and sold by Sir Butter.
    Isaac Newton Sticker
    $2.38
    $3.17 (25% off)
    Item preview, Conocybe Filaris designed and sold by Sir Butter.
    Conocybe Filaris Transparent Sticker
    $2.66
    $3.55 (25% off)
    Item preview, Saturn mushroom designed and sold by Sir Butter.
    Saturn mushroom Extra Soft T-Shirt
    $20.99
    $29.99 (30% off)
    Item preview, morel mushroom designed and sold by Sir Butter.
    morel mushroom Photographic Print
    $9.68
    $12.11 (20% off)
    Item preview, cremini mushrooms designed and sold by Sir Butter.
    cremini mushrooms Classic T-Shirt
    $16.79
    $23.99 (30% off)
    Item preview, Giant Puffball designed and sold by Sir Butter.
    Giant Puffball Essential T-Shirt
    $17.99
    $23.99 (25% off)
    Item preview, morel mushroom designed and sold by Sir Butter.
    morel mushroom Classic T-Shirt
    $16.79
    $23.99 (30% off)
    Item preview, Deadly Dapperling designed and sold by Sir Butter.
    Deadly Dapperling Poster
    $16.19
    $21.59 (25% off)
    Item preview, Chanterelle designed and sold by Sir Butter.
    Chanterelle V-Neck T-Shirt
    $20.69
    $27.59 (25% off)
    Item preview, Vintage boot daisies designed and sold by Sir Butter.
    Vintage boot daisies Classic T-Shirt
    $16.79
    $23.99 (30% off)
    Item preview, Mushroom pattern designed and sold by Sir Butter.
    Mushroom pattern Essential T-Shirt
    $17.99
    $23.99 (25% off)
    Item preview, Destroying Angel designed and sold by Sir Butter.
    Destroying Angel Extra Soft T-Shirt
    $20.99
    $29.99 (30% off)
    Item preview, Flower Pot Parasol designed and sold by Sir Butter.
    Flower Pot Parasol Poster
    $16.19
    $21.59 (25% off)
    Item preview, Netted Rhodotus designed and sold by Sir Butter.
    Netted Rhodotus Pullover Hoodie
    $31.49
    $41.99 (25% off)
    Item preview, Daisy pattern designed and sold by Sir Butter.
    Daisy pattern Essential T-Shirt
    $17.99
    $23.99 (25% off)
    Item preview, Fly Agaric girl designed and sold by Sir Butter.
    Fly Agaric girl Classic T-Shirt
    $16.79
    $23.99 (30% off)
    Item preview, Devil's Tooth designed and sold by Sir Butter.
    Devil's Tooth Poster
    $16.19
    $21.59 (25% off)
    Item preview, amanita jacksonii designed and sold by Sir Butter.
    amanita jacksonii Graphic T-Shirt
    $22.49
    $29.99 (25% off)
    About Sir Butter
    • Joined February 2020
    • 73 designs
    3
    Followers
    5
    Following
    310
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