Thanks Traveller... Hopefully I'll be able to top your Street Bowl project...
Juergen: Yeah, I feel like just having a go at casting all kinds of crazy stuff when I read that page.
Now, for some other questions:
Any tips on chests to use? I don't feel like having those flimsy chest markers when I've got a fancy dungeon.

I've spotted the treasure chest on the GW MO, but at two quid a piece I don't think I'll buy twelve of them. Maybe I will in the end, if I find nothing suitable though. I'll try to find a mold from a swedish company which has a treasure chest in it. Haven't seen it since "back then" when I played RPGs though.
Any ideas for teleporter pads?
Spike traps etc will have to be markers... I'll just have to make new ones, as the ones that came with DB are a bit too small. The idea is to take a pic of a painted floor tile, print it out on a sheet and have that as the back of the markers (a back with a motife is harder to identify than white backs, as stains and specks quickly build up and make the counters recognizable). Then I'll just scan and print larger versions of my dungeon bowl pit and spiked pit markers too, and glue the two together.
I'll refrain from glueing the wall sections where it'll be possible to place doors, as the molds I have also have a wall section with a door hole.
/Phreedh