I'd give laser pointers to Neanderthals. Even if they did figure out some useful application for them (maybe hunting?) they'd run out of batteries eventually.

OQB @python@lemmy.world

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[–] 3 points 1 year ago

[Solar powered strobe lights.](https://www.amazon.com/Solar-Strobe-Warning-Light-Flashing
/dp/B08HLL8JQL)

Sure the battery will fail after a few years but until then they will have something that won't exist again for centuries.

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