My daughter's boyfriend came up with the idea of cutting up an old grocery cart for grates. They work at a local grocery store, lol!! I don't know what grocery carts are made of or what they may be coated with or how they'll hold up to heat. Has anybody thought of/used this idea? I don't know if I'd use it for the food grates but maybe for the bottom of the fire basket? And please, no posts about the legality or morality of "sacrificing" a stores grocery cart Since they work there and I know most of the store managers I'm sure I'd have no problem getting a throw-away. Then I'd have wheels for the bottom of my UDS too!!