Use small rice bowls, milk cups, and glasses. It can be used to replace cake molds, but the shape is slightly inferior to paper cups of the same size.

It must be high temperature resistant and microwave safe. Otherwise, problems may easily occur. What did you use to bake the cake. If it goes in the oven, choose metal; if it goes in the microwave, choose plastic or porcelain specially designed for microwave ovens. You can choose a container to bake first, and then use tools to cut out the desired style after baking. Aluminum lunch boxes from the 1900s and 1980s are okay because they are made of aluminum.

An enamel basin is also acceptable, because the baking pan of the oven is also enamel.