I like using desk lamps for bowls and small tanks, but you may want to upgrade your light bulb. There's some cheap 40 watt full spectrum bulbs that work well, although algae can be an issue. Plant it, and plant it well. CO2 might be a good idea as well, since it will help the plants outcompete the algae. Fast growing plants will be your friends, but unless you use a substrate meant for plants, you'll have to dose fertilizers, and might have to anyways. If you go shrimp though (shrimp are always fun) do NOT use Seachem excel though, use co2 instead.
Anyways, as Bettacrazy said, shrimp would be a good option, cherries or any of the neocardinia species (cherry, fire/painted fire red, orange, pumpkins, yellow, green, blue pearls, blue jellies, browns, chocolate...ect) Just don't mix the colors, because then you get blah.