This lighted magnifier, which can be found at cloth stores (as in sewing) is a great aid for working on small circuits. The LED lighting is surprisingly bright, too.
Here is a view of it in its intended use.
The magnification is about 2.5X so it’s great for soldering on small boards.
Update: I found this item at a Joann fabric store. It was surprisingly hard to find online, but I did find it here.
