Reading this, I had the idea to create a sliding cover, in the same style as the bulky plastic ones, but made out of a sticky note. Turns out this was not an original idea, and the person who beat me to it has a much slicker design than what I had in mind, using a single sticky note, cut in two pieces, with a symmetric design.

http://www.linux-works.de/Wiki/OrigamiWebCamCover?action=Att...