I purchased an Ott sewing machine light that I like with a 60% off coupon at Joann's. I like that I can move it between machines or use it as a stand-alone. It attaches with 3M command strips and can use a USB or batteries for power. I also pulled it out during a recent power outage. :-)
https://www.joann.com/ottlite-sewing...Blight&start=1