I introduced my son to the yumminess of peanutbutter and banana sandwiches years ago. I've been on a muffin-baking kick lately, and I figured the peanutbutter and banana flavor combo would work well in muffin form.
When I'm baking bread I usually make several loaves at a time. I'll make most of them savory, for the family's sandwiches during the week. But I'll also play around with sweet additions in at least one loaf, mainly for my own amusement, though the kids and Bill tend to approve most of the time.
As I mentioned in this post yesterday, my kids love Sesame Noodles. And my husband has his own recipe for them, which is not written down and does not use actual measurements or anything. He just wings it.