My fish tank looks really empty...?

I have a 5 gallon with a female crowntail betta and some ghost shrimp. I had more but i listened to your advice and gave them to my aunt in her 90 gallon. But i kept the albino corydoras. I dont care what you say, Im not giving those away. Besides, their only an inch. anyway, it looks empty. How can i make it look better? now, im not getting more plants as then i wont be able too see the fish.