Puzzles in tabletop RPGs tend to be enormous, on the scale of rooms, something that needs a dungeon, castle, or bank built around it in order for it to make sense. As such, most puzzles can't be poached from something you've already bought for use in the game you're playing now.
Originally part of the abandoned community project "Everything but the Monsters", Perplexing Puzzles #2: Puzzle Chests introduces treasure chests that are locked with a puzzle rather than by key. Small and portable, these puzzles can be plopped into a game wherever you feel like it!
In order to facilitate easy integration, the entirety of this product is Open Game Content. Have fun with it, take one of the various adventure threads and run with it on a forum somewhere, or even make some money off of it! I officially don't mind.
Brad Crouch
Interjection Games
Definitely getting picked up Friday when I get payed.
I appreciate it, mate. This one's going to have to survive by having a good tail - the initial state was non-existent.
Wait...#2? Was there another I missed?
Yep, a freebie on DriveThruRPG. I'm not carting it over here because it simplifies taxes.