Easier to buy the stuff lifeview refers to. I've got big rolls at home and in the truck toolbox but the little stuff in the packs. Life's too short to waste your time rolling duct tape onto straws...

Maybe just check out how they make it for the Ritter Kit. Get yourself a dewalt drill and there you go.

http://www.dougritter.com/psp_slideshow/pspslideshow.htm

I've seen these once at rei the small rolls they were a double pack

I just roll duct tape around my hiking stick, right up next to the handle. Always handy.