Puzzles reward clever thinking. Give the players something to explore and experiment with. This could be a dangerous device, but one the players are able to exploit for their own purposes.

d6	Puzzle
1	Room with a floor made of an electrified copper plate. A piece of valuable treasure sits in the centre.
2	Three feeding bottles with different-colored liquid inside. Each is inert individually but powerful/dangerous when mixed.
3	A crystal, a magic sword embedded inside. The crystal is very hard, but will dissolve in stomach acid.
4	Treasure is at the bottom of deep well.
5	Large smooth steel bowl, upside down. Treasure taped to the inside ceiling of the bowl.
6	Baited mousetrap. The lever is wired to a stone in the wall and will collapse the corridor if triggered