anemone for a beginner

[Van-rookie]

Hi guys...

I have been thinking of getting an anemone for my clowns.
I think anemones are cute and nice to look at but the lfs that I went to didn't think thats a good idea because the anemone moves around and can hurt other corals in my tank.

Any tips...which anemone that suits a beginner ? and which won't attack my other corals.

At the moment I only have a couple of polyps, hawaiian duster, pink duster, 2 clowns, 1 yellow tang, 1 damsel, some snails and hermits.

thanks