Make a stamp disappear?

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?

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rickharris6 years ago
snoyes (author) 7 years ago
I think the 'sliding panel inside the picture frame' sounds pretty easy, as it has only one moving piece, doesn't require electricity, and has been widely used in pop-up books for a long time. I think I'll mount the stamp on a piece that slides/rotates and pull it behind the mat.

Thanks for all the input.

Now to decide whodunit.
The butler, of course!
snoyes (author)  Lithium Rain7 years ago
There is no butler.

It's a gathering of the world's six greatest detectives - Sam Slayed, Miss Marbles, Charlie Sham, Jessica Stretcher, Hemlock Bones, and Nancy Prude, invited to the mansion of billionaire game-company owner and eccentric recluse Brother Parker. They're supposed to be protecting the priceless Inverted Jimmy, a unique postage stamp worth $12 million.

There's a hiccup in the electricity, and when the lights come back on, the stamp is gone! Is one of the party a thief? What dark secret could drive one of these champions of law and order to do such a dastardly deed? Your skin will crawl! Accusations mount! Cast of stars and 1000 elephants!
Kiteman snoyes7 years ago
I spot your Pratchett reference, and claim my 5AMD
Kiteman7 years ago
The the "stamp" actually a photo in a digital photo frame.

Take the photo on a black background - when you cut power to the frame, the stamp will simply disappear.

Shouldn't the stamp disappear if power is cut regardless of background? :p
Yes, but using a black background for the picture will make it look the same with or without power. In a perfect world, you might even take the picture using a background the same color as an unpowered LCD display (kind of a charcoal grey).
Ah, I see.

Why bother using any background at all? Just crop it to the very edges of the stamp.

(Although I must say, it feels really...transparent to do it with a digital photo frame; I don't think I'd be mystified at all...)
It's just a prop, which can be easily made and easily re-purposed.

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