If Ur cycling, u know about the building enough beneficial bacteria in Ur filter, right? It's called the Nitrogen Cycle. If u don't know then PLEASE tell me.
And if u DO know, then u could use live plants,like Anubis something plants or, Duckweed.It could also help u with the cycling. If u don't want a big hassle, then get plants that don't need that much light,or special things 4 it. Oh, and don't get bushy plants. Get silky ones. For the sand, idk actually. I'm used 2 gravel,though. That would also collect some more good bacteria. And 4 even more decor,search @ Ur local fish or pet store. They have a lot that u could choose from. Make sure that it's aquarium-safe though. Good Luck!!! ;)