Finding a way to store and display puzzles can be a real challenge. For toddlers it is easy enough to put a puzzle flat on the shelf with the pieces to the side. Preschoolers tend to enjoy doing a larger variety of puzzles however and storing them in the same way would take up a lot of shelf real estate. This has been the solution I have found for peg puzzles and small wooden jigsaw puzzles that has worked best in our home. We use paper trays to store a small rotation of puzzles at a time. There are also paper trays with removeable shelves which I find very useful for puzzles, the whole tray can be pulled out and carried to the table with all the pieces arranged however you please. When I do a themed unit study and I happen to have a puzzle that suits the theme I also like the appeal of the puzzle being displayed with a picture holder. I find that even a puzzle that has been ignored on the shelf for weeks will draw children in when it is displayed this way.