My five year old son and I are making a Calender Quilt together. Actually, he's making it and I'm providing the labor! This is a technique from Pat Sloan's 'My Favorite Techniques'
You can read more about the project in the POST when we started this project.
I'm using dryer sheets as the foundation, and each scrap of fabric my son picks out over the course of a week gets sewn into a brick of his design.
At the end of the first month we have four bricks completed; one for every week. He also added a block that he did at an Art festival almost three years ago.
So far his favorite block is this one: