We recently started supplementing with formula so I have a couple of empty, good sized cans at my disposal. I simply picked a scrapbooking paper that I liked, measured the height of the can and cut my paper to fit. I used a bit of Elmer's school glue at the ends to keep it in place then smudged a little bit of glue over the raw edge of the paper to seal it. Ta-da!
The best part of the project was that I had Jaelyn in the Babee Tenda next to me and she literally stopped chewing on her plastic book and watched me pick out the paper, measure it, cut it, and glue it like it was thee most interesting thing in the entire world to her. (No one tell her it really wasn't that impressive, please!)
We actually made it a family affair: