As I prepare for the arrival of my RHP, I'm trying to make a list of all the modifications I'll need to make to my PVC enclosure. I was wondering what everyone uses to secure the wires (thermometer / hygrometer) inside the cages. Currently I have a digital thermometer on each side of the enclosure (one to read warm side floor temps and the other to read ambient temps & measure humidity). My plan is to drill a hole in the back of the pvc and route the wires through but was wondering the best way to secure wires so they are not just hanging loosely in the cage. I seem to remember seeing a picture where someone had some small mounting hardware.

Also, is it recommended to seal the holes once the wires are routed through?