You can make it as nice as you like. Just stapling up plastic or a tarp will help. Or if you want to put a little more into it, foil-faced styrofoam insulation sheets make great boxes. I have used foil furnace tape to hold them together. The tape is even strong enough to make hinges, if you just tape a panel on one edge.
A styrofoam box would hold heat very well, enough that the LEDs should make it as warm as you like. Since you have a temp controller, you could wire that to an exhaust fan up top, so that you vent when it gets hot. You'll need a fresh air exchange every so often anyway. You would want a passive intake at the bottom, like a dryer vent turned backwards.
|