SMALL rechargeable LED work lights
I've used this one for years and love it. It's bright as hell and a charge lasts a LONG time. The magnet is very strong and even has a hook. It's priced higher than when I bought it, but it's easily worth a twomp in my opinion.
https://www.amazon.com/gp/product/B07DCL81W3/?tag=fabo03-20