Make a stamp disappear? Answered
I'm planning a mystery dinner party. There will be a postage stamp on display. I have a way to trigger a lights-out remotely (just by plugging the lamps into a remote-control switch). During the blackout, which will last a few seconds until I can "find the fuse box," the stamp needs to disappear.
I could of course just walk over and steal it myself, but I'm looking for other suggestions. Print the stamp with some kind of ink that will vanish if hit with a camera flash? Some sort of motor-and-string attachment that could pull the stamp into a hidden chamber in the display case?