I love rotala indica. Doesn't need a lot of light and is very attractive.

Java moss is very useful and hard to kill, looks great attached to rocks or driftwood.

The various anubias are also great to look at and need no special care. A little on the costly side, but worth it!

I like duckweed. But if it doesn't get enough light, and I mean it has to be pretty dark, it can start to look scraggly.

My experience with banana plants is they require a little more light then a "standard" aquarium bulb/tube. The Java Ferns should do fine. Try the link below. They have fair prices and the shipping fee is $12 flat rate. Also visit the set-up articles it has some useful info

Here is a link that might be useful: Aquarium Garden