A Magical Puzzle Key for opening a door. Innocuous, somewhat simple, but fun to solve, if you like puzzles.
A magical barrier of acid blocks your path. Solve the puzzle to unlock the door.
A combination lock, possibly to open a chest or door or other entry point. A magical puzzle, for those interested.
Checkerboards on floors of dungeons… is there any greater bane to adventurers?
...among the items identified was a dolphin-shaped bathtub of marble and porcelain, a winged-back, high-chair of teak and velvet studded with fire opals, the gear-thing contraption from the dungeon-laboratory of Dr. Bezemot, the oil portrait of the rubicund Madame Orundilde Tarwygg, and a strange item known only as the Last Candle.