I mostly use the alternating whole block and 4 patch that are 6.5" unfinished in a 5 x 6 block layout and a 1.5" inner border and a 3.5" outer border. That is the layout that Quilts for Kids sends out with their kits. You can get one pieced in a day, pretty easily. I also like it because they are narrow enough that you don't have to piece the back. There is enough around the edges to bring the back around to the front to make the binding. But I think I've seen pics posted of all kinds of patterns, so pick one you like and run with it.