What do you use to hold hay?

I was originally using a Tupperware cup to hold Olives hay in. She continuously knocked it over, so I tied a different tray with holes in it, to her cage. But now she's using that as a second potty. Keep in mind that were working on finding a hay she likes, she doesn't seem very interested in it. What do you use to hold your hay? Do you think this problem will improve once we find a hay she likes? (Using oxbox, working on the different types of hay.)