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.
Puzzle storage. Instead of all those puzzle boxes taking up room, put them in pencil cases and use zip ties to sort them by size. Did this with my kids' puzzles. One for 24 piece puzzles and one for 100 piece puzzles