"Welding" eh? LOL, I think you meant soldering.

While I can't find a cheap source of these in the U.S. right now (http://www.robotshop.com/ is out of stock) you might keep your eyes open. And for that matter you might find somebody who has packaged up a Dingleberry Juice or whatever in a similar little proto-box.

86Duino EduCake

Using a hands-free magnifier or magnifying visor to aid with vision and perhaps with the aid of some fine-nosed long-nose pliers these can be a bit easier for the experimenter suffering from age or various infirmities.