@Spycologist: I have a vinyl plotter which I use to make my stickers from big roles of adhesive backed colored vinyl. A plotter is basically just a big computer controlled knife that cuts out images I draw in vector format. I do most of my art in Adobe Illustrator. The stuff I'm peeling off at 3:32 is application tape. This is a low tack tape that I stick to the vinyl to pull it off of the plastic backing after it has been cut.