PC Grow Case

I'm starting up an old unfinished project of mine of constructing a PC grow case. I have most of the materials I would need but I still am not sure about how I will mount the lights in it. I have a power bar and plugs like you would see used in a normal house. The only thing is there isnt any thing solid to screw the sockets into. Before you recommend duct know that it will get heated and not support the weight.

tl;dr I need to mount my dang sockets in my pc case.
 
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