Question is, why be reliant on the sun shining.

https://www.alibaba.com/product-detail/Portable-Multifunctional-220V110V12V-Hand-Cranked-Power_1601494906221.html?spm=a2700.galleryofferlist.p_offer.d_image.109713a0fk2G12&priceId=64b631ce0d40479a96e4d393459a64bf

These are really hard to find in North America apart from toy versions, but the chinks are a practical people. They're usually 220V, but a plug-in converter to 120V is cheap.