Going through that experience is what made me eventually buy a solar generator when I had the money in the right spot. I've felt really unsafe until I managed to get one figured out. Jumped on a Black Friday deal prior to the pandemic and got a DJI Power 1000 and two solar panel sets for $500.
I've given it a fair shake at this point, and just with the light in my enclosed back yard, I am collecting almost 400W/h, which is more than enough to run the fridge for a few days by cycling the power so it runs for only a few hours total per day.
I really really recommend folks explore solar these days. Battery storage technology has really, really improved since the early 2000s. Solar panels aren't meaningfully any more efficient, but the real advantage these days is that panels are dirt nasty cheap if you are willing to wait on freight times. You can even buy a $30 panel rated at 6W and connect it to a USB power bank and run your vapes, Flipper Zero, etc on solar!
You got that right friend. 🤝