I love PCB and cable mounting clips, but you have to buy in bulk for them to be reasonable and even then they cost too much. Time to print them instead!

STEP files are provided for remixing, but you can let me know what height/diameters you want to see in the comments and I'll try to get some out to add to the collection.

Standard mount bases are sized for either 5.2-5.5mm holes in 1.4-1.8mm plates/PCBs, or ~8mm holes drilled in solid material like wood.