Looking for cool unusual things

[Biocube14]

Don't get me wrong, all things in sw are crazy cool looking. But my tank is not so much dedicated to coral and fish, more like crabs, shrimps, sea urchin, feather dusters, sea squirts, etc. Can't have a starfish or a seahorse.. I tend to like the stuff that is active and moving. Anybody else have any other ideas in the nature of things I lean towards? I'm still less than a year into sw so I still have much to learn.

[scubasteve03]

Flame scallop are prety cool dont move much but do like crazy