A meta-puzzle is a puzzle which unites or incorporates fundamentals of other puzzles. It is often found in puzzlehunts.
The Rubik's Cube and other magic polyhedrons are toys based on puzzles that can be electrifying toys for kids and are a recreational activity for adults. Puzzles can be acclimated to hide or obscure objects. A excellent Photo Puzzles copy is a puzzle box used to hide jewelry.