I came across this on a blog, and thought the idea was just too genius not to share. My kids all love puzzles, and I love for them to have puzzles, but it seems the pieces eventually get lost. (or, someone accidentally knocks it off the shelf and all the pieces go flying, most likely to have one or two land behind a bookcase or slide under the stove) Here is the solution to that problem:
Simple, inexpensive, fantastic. Wish I had thought of it myself.