If you're building a large rig and you DON"T have a bag of at least 1,000 zipties, you're doing it wrong.
So true lol. I keep a stock pile of Zip ties around in case I get in the mood to do a little rearranging/house cleaning. I think every GPU in my farm has at least 2-3 zip ties each in some shape, form, or fashion.
If this doesn't solve it, than nothing will.
Tape is surely better for some purposes. Ever tried to build a bridge spanning 10 meters with zip ties? (See myth busters for the tape bridge).