Man, do I ever love it when two of my favorite things get together. I'm a Reese's Peanut Butter Cup type of guy. My most recent favorite "You Put your Chocolate in my Peanut Butter" example is the Etsy+Instructables "Sew Helpful" contest. The rules are pretty simple. Make something "useful" to sell on Etsy, then document the process via an Instructable. They've kept the restrictions purposefully vague, so you've got a lot of room to wow the judges. The winner will take home an awesome sewing machine. The deadline has been extended through July 16th, so get to creating!