Everything is made of the same stuff

Let’s see how these machines work: A blender, A pressure cooker, air fryer, toaster oven, vacuum sealer. The goal is for my audience to discover that everything is made of the same simple components. I want machines to feel like pizza: they all have the same basic parts like crust and sauce and cheese. When you see a new topping you still recognize the pizza. In the comments I’d love to know: did you already know most of this info? which part is new to you? did the explanation make sense? which part should I clarify better? if you answer the above, can you also tell your background? I’m discovering which trades and expertise come with this knowledge.