Sauron is a rather large flaming eyeball of fiery doom and evilness. That much is a given. Whilst he does enjoy leading dark creatures into war, giving out defective jewelry and general bad misdeeds, a recent injury has left him confined to his bazillion-foot tall tower fortress for several hundred years.
Still, he has gotten rather good at spotting teeny tiny hobbits halfway across the world. Take him along with you in the form of a sticker or Iphone case and let him keep a watchful eye over your belongings !