Buy 2 totes, some weather stripping ,2 clamps, a PC fan, a 12 volt transformer, a hot knife, two cheap bathroom light fixtures, and an extension cord. Put the weather stripping on both totes, right where the lids would go on. This will create a seal. hang your light fixtures on the sides of the top tote. Strip the wires on the light fixtures and on the extension cord. Splice together. Cut an exhuast hole up top, take the PC fan and strip the wires. Strip the transformer, splice the cords together and plug it in. If it works, good, if it doesn't separate them and switch then test again. Attach PC fan to exhaust. Cut a hole on the bottom side of the tote for air to get in, if you want you can buy a small black 90 degree pipe and seal it to the intake hole. This will prevent any light leaks. After all that use the clamps on each side of the tote to secure it down and ensure a tight seal