I keep mothers and clones in a Rubbermaid Deck Box

This one...
Rubbermaid- Large Deck Box

I have been using it for almost 2 years with decent consistency.
I picked up a 8" Desk fan and drilled two small holes in the box to cable tie the fan to the box.

Using Sunblaster T5's, again small holes were drilled and cable ties used to secure the lights to the top of the box.

Prior to putting together the box, each piece was wrapped in panda plastic and once put together the excess was trimmed off.

I used a PVC 90 degree for a passive vent at the bottom of the box on the opposite side of the fan.

I can fit 8 bonsai mums (search for the post) and one full dome full of clones.

Temps stay where they should be and I have problems with humidity.

If it fits, this box can be made lightproof with weather stripping around the lip of the lid.

have fun whatever you do...

Me.