Well, it is actually a "technicolor cozy" out of stitch n bitch. It is just a rectangle with a couple BO's, and then sew it up. Insanely easy...you'd think. I've ripped it out a million times since the cotton really shows differences in tension...so now I am just pulling it as tight as humanly possible and it is working.
I'm going to stick all my wallet stuff in there...since I don't carry much around.
Do you know the author of that book? I have a 4yo and 2yo who love stories (especially about animals!)