I designed a cereal mixing bowl so that people can enjoy cereals in their own ways.
You can pick your desirable cereals from the package, and mix them into the bowl, which is the bottom part of the package. You can enjoy the rest of cereals as snacks later. The bowl is made of plastic paper (Yupo) then folded - no cutting and pasting. Therefore, when you pour milk into the bowl, it doesn't get wet and there is no leaking problem.