Suggestions for new aquascape: theme movement - anemones, softies, LPS

[syncro]

Looking to reboot my tank. I'd like the theme to be MOVEMENT. Tentacles and polyps waving in the current.

I'd like the center piece to be anemones in some form. Perhaps a large individual or a large group of small ones. Supplemented by softies and LPS.

Any suggestions? It is a smaller tank, 40g, so compatibilty will be a consideration.

Current tank:
40g
2 x occelaris, 2 x banggai cardinals
small bta, gsp, sexy shrimp, misc inverts

Thanks!