Luke Skywalker Farmboy
Thomas adapted pre-existing pieces for much of this outfit: Judo gi, belt, cartridge pouch, and trousers. He used Ace bandages for the "vaguely-Saxon leg wrappings." He made the rarely-seen poncho himself.
Through most of the mid-80s, Thomas wore various Luke Skywalker outfits -- this one was among the most popular.
In the top photo, that's Laura Bolling with Thomas at the 1983 Worldcon.