I have used the cans to help distribute fullness in the middle of the quilt; worked pretty darn well, if I say so myself. I thought the top was hopeless, but it actually turned out quite nice. I'm going to make the rice bags, though. The cans have rolled off my frame more than once and given me a start. The rice bags should stay in place better, even when I get to the edge, and if they fall they won't scare me as much!