You could have some mushrooms, or curley q anemone. Curley q's like the rocks (well mine does) that way he will move to where he wants. I think curley's are the best anemone, no clown will host them but they are cool to watch..very elegant with all those long tenticals. Mine likes to wrap around my arm when I'm working on my tank. It feels very strange, he probes my skin, it's kinda creepy but cool at the same time. I put him on top of a rock and he has stayed there ever since, like king of the hill LOL. He gets along well with all the inverts in my tank and fish, I have seen my clowns swim in and out of his tents and he has never offered to catch them, matter of fact he is scared of them and retracts?? (for lack of a better word) from them. Well what ever you decide, good luck and keep us posted.