In my career as a baker, I've burned more bread that I've baked. I put dough in the oven, and then start milling flour or doing something else to pass the time. However, I often pass too much time, and find nothing but ashes in my oven.
So what I propose is an alarm clock item that can be added to the oven to upgrade it. It should require iron to make and maybe even a new skill - one that'd allow more mechanical contraptions, otherwise it's pointless. So how does it work? Well, we pretend that our avatar sets an alarm when he puts the dough in the oven. Once the baking is complete, the alarm goes off, which can be represented visually. Maybe the clock can jump up and down on the oven and shake a bit. This would enable us to do other stuff more easily while we're waiting for our bread to bake, as long as the oven remains in sight.