Jim Wilkins wrote:

There's an old parlor trick with two switches and two bulbs wired in a
series loop where each switch controls a bulb independently.

....

No one ever notices that the bulbs aren't at full brightness.

I don't have a photo of mine, I took it apart because it is so
dangerous.

Cute. You could power it with a 24v transformer & use 12v bulbs, for
full brightness and a safe circuit.

Bob