I like flaccideagles idea of making duplicates, if you don't want to fool with silicone rubber to make the molds you might be able to make some realy simple two part plaster of paris molds. They won't be as highly detailed however.
the neat thing about dios is that your figures wont need articulation anymore, so making resin coppies in fixed poses will allow you to make several ewoks quickly and cheaply...
but depending on the number your wanting to make it might just be cheaper to buy several of the legacy collection two packs and just swap around parts and repaint the stock fiugres.