So I've got 16 traps to make in the first level. I prefer to have memorable and interesting traps, but it's a pain to come up with so many. No way to finish except by starting, so here's trap #1.
101. Eyeful of Jellies
The 10’ by 10’ square area in the center of this room has an intricate carving of a face with a gaping mouth and empty eye sockets on each side. The floor around this central area is covered with a dozen skeletons.
The eye sockets are recessed, and have voids above them. In each right eye socket is a small lever. Should anything less than all four levers be pulled simultaneously, eight corpses jellies (AC 9, HD 1+2, hp 6, #AT 1, D 1-6, Save F 1, ML 12) will be released, one from each eye socket. Every player with their hands on a lever when this occurs will be subject to an attack from a corpse jelly as it is released. The players will be surprised on a 1-4 on a d6. The jellies will use the first round of combat to engulf the skeletons, if they are within reach when the jellies are released.
If all four levers are pulled simultaneously, the stone behind each of the mouths will lift away, allowing the players to crawl through into room 102.
102. Tarnished Bones
This room contains a skeleton made of tarnished silver. The skeleton is worth 900 gp.