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.
DONE (I didn't look at the dollar store, but found big lingerie bags at Walmart for $0.97 each, can't beat that! ABSOLUTELY loving this! The kids get out one puzzle at a time and put them away on their own- haven't lost ANY pieces in the month or so we've been using these!) Puzzle storage... lingerie laundry bag ... love this idea so that the pieces do not all get lost in the closet!