You could capture a picture from the web, and manipulate it in PhotoShop or another photo massager to get it the right size. I copy the picture many times on the same page in Microsoft Word, then size them all differently. 1 inch, 1.1 inch, 1.2 inch. Then print them on a laser printer. (I do it at work.)
Then find an appropriate surface to glue it to. A ping-pong ball or something thin and curved. Glue down with white glue. When dry, touch it up with a paint brush, or paint over the entire thing.
I did this with a Flash logo for his chest and it looks fine (by my low-low standards).
The beauty here is you can have any size or shape you want.