I just called my local camera shop to ask for a roll of gaffer tape. I want to make a couple of snoots and a light box or two. Now, I have heard to use gaffer taper because it doesn't allow light to pass through, but is there an alternative? I didn't ask if it's a duct tape size roll of a clear tape size roll. They want $19 bucks a roll, I can't imagine needing much more than a meter or two at the most. The local Micheals arts and crafts supply store doesn't carry it. Suggestions?