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It's a revolving door that operates a (admittedly low-speed) Van de Graff generator. Either the collector globe is directly above the door, or is removed at some distance and is operated via a long stretch of silicone rubber band.
Now, a very high voltage / low-current power source is not terribly
useful, unless you want to run a negative-feedback security device on, say, a piece of statuary in the lobby of your fancy office building.
Sign on the statue: "Do Not Touch."
Recalcitrant visitor ignores sign.
Another sign near the floor, where it is conveniently visible to the now-horizontal visitor, says "Told you."
||Well, [+] because why not? Also, I have
this mental image of a long-necked
quadruped with a metal sphere for a head,
and a static-producing rubber belt running
between its head and its body. It's a Van
Der Giraffe generator.
||[Max] - You forgot to actually vote. A common problem of mine also, by the way.
||Ah. So I did. Rectified. My mind is
wandering, and I'd quite like to see a
revolving door that is actually mounted on
a fine-pitched threaded axle. As more and
more people come in, the door would
slowly screw itself higher and higher,
becoming unfeasibly inconveniently high.
||Surely touching this would be a van door gaffe?
||[Max], a revolving door that literally screws with visitors? Most excellent.
||The statuary could be a Venus De Milo statue with only certain private parts energized for the very recalcitrant types
This version could be titled Van Door Graff Venus De Milo. A built-in camera would make for excellent You-Tube fodder!