Ironically, "Gaffer" is the German word for rubberneck.
https://en.wikipedia.org/wiki/Gaffer_%28filmmaking%29
Hence "Gaffer tape" which is black, rather than duct tape, which is the same construction but grey.
Its my favorite tape for general use.
I currently use this one on my glass desk: http://www.amazon.com/Logitech-Wireless-Anywhere-Mouse-Mac/d...
>Haha yeah I have at least ten of those... They do not work on certain glass surfaces, namely any shiny black granite desk.
That's specifically why I bought this one and it works flawlessly on every glass surface I've tried.
It's a bit harder to get this style, because when people say "gaffer tape" they normally mean "duck tape, or duct tape, or anything like that".