This is the best thing I have found in some time to "light up my life". LED strip sewing machine lights! Do a search on Amazon and check them out. Look for the LED strip light sets. They attach directly to the upper part of the throat of your machine and have a toggle switch that attaches to the back of your machine for on and off. You can place them where they help you the best. I bought the "inspired LED" brand because it had the most reviews. I can only see out of one eye and now I can now see black thread on black fabric!
OTT lights are great and I own several both plug in portable and floor models. But these strip lights add it to the machine needle area and makes a world of difference.