I ended up with some great pieces of driftwood and decided I'd like to do something with that. This is one of the dioramas I had in mind.

I saw Aran the Barbarian on Massive Voodoo and immediately the rest of this duel jumped in to my head. I had the amusing image of a Barbarian character set to duel with one of the Predators that roams the universe so took off to Predastore. Found the "stalker" model and everything just came together! I'm really happy with it.