Toasters in particular have the potential to be fun. I want a freezer-bunny toaster that makes impressions on the toast. Toast that flies out of a cheap toaster. Toaster electrocution from sticking forks in to get stuck toast out. Toaster fires.
Kettles are interesting if they're stovetop singing kettles. Like doorbells (!), you could have ones that do more than a default sound, for fun. Not so sure I want my Sims scalded, though.
Teapots!! While I really do like the tea options we have now, it's not servable tea. My Sims can't play "mother" and pour. And my children can't have "tea parties".
I've no idea what kind of larger pack this could all fit in. But maybe it could be Stuff Pack material? A Tea Party stuff pack, with everything from your morning toast and tea to a child's tea party with toys (or a patient grown-up) to a high tea. I'd buy that!