A couple years ago a friend of mine gave me the "starter" for some Amish friendship bread, with a page of instructions. Amish Friend Bread is a sweet and delicious breakfast cake type bread thats kind of like banana bread.
The starter is a cup of batter in a gallon sized ziploc bag that has secret ingredients that they say only the Amish know. (but the internet knows everything and here's a link to the recipe for the starter,the instructions on how to make it, and the rest of the recipe). You wait 5 days and add some ingredients then wait 5 more to add the rest of the ingredients then you can make the bread. The 10 day recipe really is fun to do because you get to share it with your friends.