I found a whole bunch of these on a free clip art site, and thought some of them would look good on a tee.
Ganesha, also spelled Ganesa or Ganesh and also known as Ganapati, Vinayaka, and Pillaiyar, is one of the best-known and most widely worshipped deities in the Hindu pantheon. His image is found throughout India and Nepal. Hindu sects worship him regardless of affiliations. Devotion to Ganesha is widely diffused and extends to Jains, Buddhists, and beyond India.
Although he is known by many other attributes, Ganesha’s elephant head makes him easy to identify. Ganesha is widely revered as the Remover of Obstacles and more generally as Lord of Beginnings and Lord of Obstacles (Vighnesha, Vighneshvara).