You could do a scrappy Irish Chain - I made one with red, white and blue fabrics for a family reunion, but for consistency I used a dark navy for consistency. But you know what, I can't remember where I put that navy blue; but by strip piecing 2 1/2" strips, sewing them together and then cutting into 2 1/2" segments, the quilt went together quickly. Something to think about - what about a Trip Around the World? Eleanor Burns has several quilts on her web site that give clear directions, and her quilts usually work up very quickly. Also, be sure to put their names on the labels, so that they can be returned after laundry.