I also wanted to know if any of you have incorporated any of the death traps into the vaults listed in the back of this book, and if so how did it go and do you have any suggestions for running them?
I have used the Pendulous Staircase and Philosopher's Stone thus far and they have been very memorable encounters, causing the PC's to think outside the box a little.
As I noted above, the in the Philosopher's Stone trap, the PC's really didn't push each other out in the hall, but tried to stop the ball with a stone elemental which failed. I did not did not do the staircase right as I forgot to roll a reflex save for the PC's every round only when they broke another stair (it was about 1am at that point) so the stairs didn't fall. The PC's did get smacked around a lot though. In the end, the PC's did cut the chain at the top of the main shaft causing the whole thing to come down. They will use a rope next time.
I am going to try to use all of these traps in the halls and caves, though I may need to adjust the save DC's for some of them as my PC's are at a higher level than what is suggested.
Kudos to Gareth Hanrahan for these traps. They are very well written and provide some different play as opposed to fighting or diplomacy.
Where specifically did you incorporate the traps?