Do you want it to host or look pretty?
Host would be a seabae anemone or a bubble tip.
A pretty anemone is a maxi mini anemone they are easy to take care of and don't move around like most others.
Carpet anemones get to big for most tanks.
Remember most anemones come from the wild and the fish they had in the wild will most likely die so choose carefully. Make sure your tank is stable, power heads covered, proper lighting and the tank is well established.