I use LED gooseneck worklamps from IKEA. They're called Jansjo worklamps. JANSJÖ LED work lamp - black - IKEA
They cost about $10 ea. They're available with a clamp or a heavy flat base. It's fairly easy to turn a wooden base that has a large magnet recessed in the underside. I have 7 or 8 and use them all over my shop. Not a general light, but very focused. My only criticism is that they have an inline switch.