By "Don't need light" I assume you mean other than natural light.
Quite a few cope well with lower light levels. Java moss and ferns have already been suggested.
Hygrophila polysperma, Rotala, baby tears, Hydrocotyle, Anubias and dwarf sagittaria come to mind.
As for fertilisers, none of the above plants suggested should need extra other than fish waste. I have never added fertiliser to my tanks and have had no problem growing the above.
If you don't like plastic plants, there are silk ones available which look more natural.