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.
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.
[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.