Puzzle storage!! Best way to store kids puzzles! Buy some Legal size poly expandable envelopes. Remove the string and replace with Velcro circles. Place in a bin or on a shelf. My rule is one out at a time. The envelopes are easy enough for my two year old to open and clean up himself.
Storage/Sitting Room Turning a couple of bookshelves into a corner bench/storage center is a great idea if you have room. You just need two bookshelves that are the same size. Just line them up on both walls touching in the corner (lie them on their sides) - 5 Easy Storage and Organization Solutions for Any Kid’s Bedroom