How about applique. Put all your background squares with the pieces that go on each one in a separate ziplock. Have each block ready to applique (center markings, pins, thread,needles,small scissors) Thread numerous needles and place in a small pin cushion in a ziplock. Then you can applique in the car too. We have a place in west Texas and one in Arkansas..lots of road time. I applique and make yo yos all the way there and back. I was amazed how much I could do.
D in TX