I bought a studio LED panel from Amazon (for videography generally). It came with a stand that attaches to the desk to be used as a webcam light but I mounted it on a shelf and it hangs over my head like the sun. It has a 3000k-8000k temperature range and that and the brightness can be controlled by a remote. There are a bunch like this available under different brand names. For the price I've found it to be a good solution for now and I also have a photography light as a bonus.