Wald Baskets I'm Looking For A Plastic Bucket That Will Fit Inside My Wald 582 Folding Rear Baskets. Any Suggestion? Thanks?

I'm looking for a plastic bucket that will fit inside my Wald 582 folding rear baskets. Any suggestion? Thanks? - wald baskets

I tried to scan cube. There are some that are rectangular and can be ideal, but you must take steps to make sure.