So during winter break, a friend and I will have a lot of spare time and not a lot of spare money. We're trying to think of a big project that can be completed in a two week time frame, done in the comfort of a basement, and cost very little money.
Previously we built a small trebuchet to throw tennis balls. That was pretty fun.
I've proposed both an ice boat (wind powered) and that's about as far as my brainstorming has gone.
My town dump has a huge pile of used wood. Not a lot of 2x4 type wood, but lots of old desks, nasty plywood, and random stuff like that. That's probably the largest cache of free materials at our disposal.

