My door wasn't drilled for the knob either but if it was you could use it to drop the cord for your power strip through. My power strip is suspended from my lighting support. Another thing I did was put a 1x4 along the back edge. Helps to resist sagging and keeps most things from falling off back edge.(pins,parts,tools,etc) I have another removable board I can place on the front edge whenever I need a vertical surface to work against. Gonna eventually build a large surface in garage for larger projects but that is probably a fall project unless I can rig up some A/C out there