So I was reviewing my emergency preparedness kit earlier this week as I need to restock a few items that have either expired or have been used and man, there's some cool stuff you can get now, like a crank powered USB battery pack:
https://redcrossproducts.ca/product/805/boost-turbine-2000-from-et-n-silver-rechargeable-usb-battery-pack-with-hand-turbine-power-generator
Nice!