EEK! I am so sorry, I totally spaced the 3 nano tank w dwarves part of this! No, LPS are probably not good, seeings how most could grab a tiny seahorse, esp a fry baby and I am not sure it could get away.
Sorry?
Zoanthids, mushrooms (not the kind that eat), even SPS if your light is right, but I would most LPS are out.