[Technology~♥ And something she's long since taken apart and figured out how it works!] It's called a toaster, and it's actually pretty simple! Electricity powers it and makes the metal prongs inside heat up. When you put bread inside, it toasts it! The toaster even has a timer that makes the bread spring out when it's done, so you won't burn it!
[It's possible that Zaveid might have more questions about the tiny, pink lady chilling out next to him than he does about the toaster, but clearly the toaster is what's really interesting here.]