I need help with my soup, It's basically broth, rice and celery?

You could make a chicken and rice soup. It definitely would need more rice, maybe 1/2 cup uncooked and some chicken . If your liquid was half water and half broth, I would definitely add salt and pepper, maybe some chopped carrots if you have any, Or you could add some other veggies for chicken vegetable soup (I wouldn't add the broccoli though, it might be a bit strong flavored for a delicate soup)