[PHFTC]

Our practice room happened to have 24 step exercise boards in the corner which we 'borrowed' for walls originally. Now the kids don't want to give those walls up despite having a homemade lexan set. Those steps were 4'x1' plywood with a 2x4 frame behind them, we screwed three together per side and put gate latches on to hold up the four walls. Best thing is that the walls are sturdy enough to sit on! Debugging, building, holding toolboxes, you name it. 1.5 sheets of plywood and enough 2x4's shouldn't break the bank...