Help: Thermostat Probe - how to keep in place?

[MoreliAddict]

Hi all

Some of you have probably answered this question before, but help me out for the sake of !

I use a thermostat made by Zilla:


In a Boaphile enclosure:


I use a RHP in the back right corner (on the ceiling) with a UTH below that(under the enclosure), aspen as a substrate.

*I need help keeping the probe in place, the thermostat came with a suction cup, but it doesn't work with the PVC (i don't think). I understand that I should be avoiding tape (I'm tempted to use gorilla tape but won't), so how should i keep it in place??

*I don't want to keep the probe directly on the floor, because I don't want it to be close enough to the UTH to throw off the temps.

Let me know your suggestions, thanks in advance!