Free Polypropylene bar tape
I'm sure somewhere someone has done this before but check this out:
my hands got cold today on the bike just doing an errand with ski gloves. I don't want to have to go to mittens, as I like the dexterity, but I'll do that if it gets colder.
Save that old polypro jacket with the broken zipper. I cut 1 1/2" wide strips in bar-tape length and just wrapped this over my regular tape. You have to make it a bit wider because the stuff stretches pretty well, but surprisingly, you can get a pretty tight, decent looking wrap. The more anal you are about cutting the strips straight, the better it will look. You MUST use fabric scissors, they are very useful once you buy them.
I finished it off with strapping tape (which I now swear by for securing bar tape, use an underlayer of that, then some colored sports tape (baseball bat grip etc) which is only 2.00 a roll . Way better that electric tape.
It looks pretty decent and feels fabulous. Polypro won't absorb water, you can just brush the water off. It should be durable enough. if you want to waterproof it more , just hit it with scotchguard.
Now I have an insulatory layer under my gloves, and it won't absorb water like open celled foam.
If you want to make it look even more fancy, wrap some black nylon trim (maybe even some parachute cord) in the cracks in between the layers of wrap. I just played with that for a sec . It looked great, just like real bar tape. I used black.