Support to slots in custom components

I know that this is implemented a little bit differently in React, but I think it would be a very strong feature. Just yesterday I created a custom component that acts as a shell/wrapper. It does nothing but that. And I am expecting different types of components to be loaded inside it. However, I can’t find a way to implement this. It would be easier if I can just create this types of components and just drop elements inside them or even custom components.