I recently bought some glass beads at the local craft store and find they look great on my small flies. I use the size 11/0 beads for tying on #16 and #18 hooks and they seem to slide on perfectly and add a nice highlight of color (and a bit of weight) to the head of the fly. And they catch fish. These will work great for hot spots on scuds and other nymphs and wet flies as well. Use one (or more) for a thorax and pair it up with some clear cure goo…now you’re in business.