Cheapest darkroom accessory: a pair of $15 reading glasses from the drug store. They're basically a magnifying glass that's hands free.
Great for view camera work too, for checking negs and prints, spotting, for maintaining delicate gear, etc. I keep them all over the place. They come in a range of strengths - try a few on at the store and look at the fine print on a package and see if they work for you.