This year I sprang for a pack of these:
They sell a similar product for caulk tubes and they work really well. They're not really "better" than electrical tape but there's no residue and it's easy to carry a few extras. I usually have extra electrical tape anyway in my emergency kit (wrapped around a pen, like most do) but for $0.30 ea, I like the convenience of these.
What Amazon wont tell you is that those are the same as the much larger packs of "finger gloves" packs of 480 are about the same price as those, they are just usually white.