What about a swinging log trap, or a giant mouse trap, floor spikes, triggered dart shooters( like in Indiana Jones and the temple of doom. 2 parts, trigger and spike shooter.) or a box trap, after stepping on a spot a box either comes up around you or falls on you. Just some random Ideas hope something helps.
Edited:
or from the cartoons a falling safe/piano trap.
Log Trap is a good idea if I can figure out how to do a decent setup for it.
The problem is the traps have to feasible to set up "relatively quickly and by hand", something that you could make if a killer was chasing after you and had few supplies.
In order to fit the theme of the gamemode they will eventually hopefully be put into. The others I can do after I finish the gamemode modes.
Theme is everything!