With how close everything is (coffee pot glass, “non-stick” griddle atop a toaster), is this device safe at all?
I see no harm if you use one function at a time. Still, while I question the power needs might test both the internal electronics, and your circuit breakers if you run everything at once, my real concern would be a clumsy cook. Caffeinated bacon anyone. Bacon grease on your toast? Do you like scrambled eggs in your coffee or on the side? Really, the biggest problem is the heat from every part. Not a problem for experienced cooks, and make sure nothing else is running on that circuit breaker if you multi-task.
