Asimple 9 patch that they can create into a lap for themselves. Use large blocks like 5" to 10 " size. 7" will allow usage of arms in shirts. if you are procuring fabrics, try to choose bright colors. "At risk" have enough bleakness. Thrift stores often have lots of sheets, comforters(most cheap store made) but could be used for batting and backing. Also drapes and table linens. Towels can be used for batting also. They may donate some to you. Get letter from PAL stating you are authorized solicitor. Maybe some of PAL members have above to donate to you.
Good Luck.