Well, this was an interesting and very challenging category to be sure. It's a very interesting approach at building, having all sorts of thoughts in your head: "So which part works here I haven't yet used?", "Wait, I used this here before, time to find something else", "What sort of moron chooses this type of subject for this category? Oh wait, me."
Sorry about the terrible part pictures, I wasn't in the mood to set up the light tent again. Let me know if something's confusing there.