I have a DGS with Aspergers as well. He is 9 and is high functioning, but attention span of a gnat unless he is playing with video games or hand held games. I have a computerized embroidery/sewing machine, and we have made embroidered pillowcases because he loves the puter part! The DGD's made pillow cases but didn't care to do the embroidery. Cases are easy, straight stitching, can have a cuff or not, etc. You could piece the cuff with the 4-H clover blocks, etc. It took about 30 minutes to learn to properly thread the machine, and he was so excited to get the thread in the needle (I didn't show him the auto threader). It was a challenge and he did it! All the kids sewed and took home pillow cases (I sent a machine home with the girls as they are in Texas) but the DGS can come over any time and sew with me!