I've been mulling over a good use of a large philanthropy spend in the next decade, and I would love to build a bunch of hardware "oracles" that include an LLM. Ideally solid state, visual/audio, solar + usb-c, so, good in a lot of doomsday scenarios as well as just out hiking. It's a fun thought experiment. I imagine making like 1 million of them, they could be sold and genuinely useful, but also given away; once owned, you could use them, or store and put in an emergency box, bury next to the 10k year clock.. a lot of possibilities.
I feel like you could get a lot more quality of life improvement for more people with the money if you spent it on low tech solutions, eg more efficient cooking stoves for people still cooking with biomass, or solar microgrids for areas without electricity.