Celotex ceiling tile, 2'x4', from Home Depot makes a convenient & inexpensive building board. These are sold by the carton, but you can get one of the apron people to break a carton open for you, or do it yourself. Last time I checked they were around $5 each. Use the back side to build on.

Keep your eyes & nose away from the visible vapors of the CA as it cures, avoid the common cough/congestion problem.

I would have a hard time building anything without a bunch of little spring clamps. Also a set of round-head hex drivers, small screwdrivers (straight blade & philips). Borrow your father's cordless drill when you need it.