I am currently participating in a block robin swap. There are six of us in the group. Each person drew a grid of 6 X 8 four inch squares on a plain piece of muslin. Then each person had to come up with a theme that she wanted her quilt to be. She then made a quilt block to attach to the grid. The grid then gets mailed to the next person on the list. As you receive each grid you attach quilt blocks that follow the theme of the grid. When you finally get your own grid back, you sew all the blocks together and then you have a small quilt to treasure. Here is a picture of the block that I put on my grid before I sent it out. This photo is a little washed out because the fabrics are much brighter than they appear. My theme was 1930's reproduction fabrics with shirting backgrounds.