They sell anodized aluminum keys now (at the hardware store) it feels really funny and light. Every time I use said new blue key i think of this thread, and can't for the life of me, remember what that is from.
We made like 7 keys, and the lightning key was part of the ones we selected. I was going to take that one, but one of the housemates got to it first. Had to go with my #2 choice, UMP blue.