On the left is the mold I bought from a kitchen store in an outlet center mall in Las Vegas last week. I used it this past Sunday at a Farmer's market.....to the right is the final product.
It is has a shape of an onion and is used for steaming vegetables in a microwave. I forgot the name of the outlet store but it is a kitchen store that sells primarily Corning Ware (actually this might be the name of the store)....
I just experiment on different shapes of possible molds. So far, I like this one.