Desperately need help finishing my saltwater tank stocking?

29 Gallons

Fish

1 Ocellaris Clownfish

1 Longnose Hawkfish

1 Yellow Watchman goby

Corals

1 Small colony of Purple Mushrooms

1 Red Digitata Frag

2 unknown coral hitch hikers. Both under an inch in diameter

Invertebrates

1 Peppermint shrimp

1 Pistol Shrimp

1 Sea Star

1 Mexican Turbo Snail

2 Large sand sifting snails

4 Small Sand Sifting Snails

1 Astrea Snail

1 Anemone Crab

That is the current stocking for my 29 gallon Bio Cube. The tank is about 6 months old now and water quality is fine. Lighting is stock Bio Cube Lighting. The frag is at the top of the tank and doing fine. Here is the problem, it sounds like the tank is pretty full bt in reality, I have ONE fish! The Clownfish is the only thing in the tank that swims around or moves at all other than during feeding time. The corals are all small and the tank looks so empty. I want it to have more color, and movement. I really need help and this is the only place I will get answers. Just list off things to add to the tank remember it;s current inhabitants and make sure the suggestions are practical for my tank. I have sat for hours researching what to add but have come up with nothing. I am taking care of the tank well but am not getting the beauty I want out of it. Just list of what to add and I will give best answer to whoever gives the best stocking information. Remember, I want color and movement. Thanks alot everyone