The First BDSM - Lots of people helped on this as this was on PvP 2. I just recently got to see my precious harvester again.
The second BDSM - This one was in build, Eagle and Ultimate helped alot with this.
The underside of the BDSMv2
Door Trap with Glitched Water - Because can.
Lava trapped in signs? Likely.
Bedidiottower - I don't remember who helped, but Hac broke it.
100% efficient cobblestone generator - Idea inspired by ultimate I think, clock improved by 1337phreak
The Coords are in the screenshot thanks to the /getpos command.