Uh, or whatever a shark says.
I made this shark towel for my nephew's second birthday. It's a little big, but he'll grow into it. (Note: that's him in it above. My five year old niece is modeling it in the picture below.) The design is heavily based on Oh, Fransson's shark towel. Many thanks to her for the great idea and also for so kindly sending me instructions on how she made hers.
I ended up using this tutorial for the basic construction. Imagine all the possibilities you can turn a towel into...bears, bunnies...(ok, I'm sure there's more but I can't think of any right now). You get the idea though. The present was definitely a hit, especially when I put it on and chased the little ones around the house screaming, "Raaaaaahhhhhrrrr!"