My girls love to do jigsaw puzzles and hate to break them apart after doing them. What to do with all those puzzles? I decided to cover the puzzle with clear contact paper. I can then use it as a beautiful placemat, furniture protector under plants, dog dishes mat, and I'm sure there are other uses I will find later! Very simple to do. After completing puzzle, simply measure the contact paper, adding 1 inch on all sides.
A common recycled craft for children and adults alike is making photo frames decorated with puzzle pieces. This is an excellent use for puzzles missing some of their pieces. Learn how to get started here.
Use the pieces from an old puzzle, especially one already missing a few, to create a cute pin. They can be painted, sprinkled with glitter, or wrapped with fancy string or cord.