There's probably no better tool in the gadgeteer's box than a roll of Gaffer Tape (or duct tape, if you don't mind sticky or crumbly residues). But what about its humble household cousin, Scotch Tape?

I've worked in both film and theatre* and can confirm duct tape is what gaffers use, even though I was not yet a gaffer when I worked as a gaffer. For the record, though, I was never a best boy. *your ...