Are there any other ways to sand texture paint a wall besides a brush and where do you get the products at?

I have used a brush to do a room in a fan style I need another idea for the second room I am going to paintAre there any other ways to sand texture paint a wall besides a brush and where do you get the products at?
I bought the sand paint at a hardware store and just put it on with a roller. You can also get the tools for a particular paint technique at any paint or hardware store. I went to Ace.Are there any other ways to sand texture paint a wall besides a brush and where do you get the products at?
use a roller