I did this with a group of women who did not sew. Have the kids bring any solid color piece of clothing. Buy some stencils with a theme (seaside, animals, ocean,you get the idea)and buy fabric paint.Cut the fabric into squares (8 to 10 inch is good)and let the kids paint a square with the stencils. Of course the paint has to dry for 24 hours, then you take the squares and use sashing to sew them together to make a quilt top, wall hanging (for the classroom)or pillow top. It will mean a lot more to them to see their square. I did quilts for a childrens home and used twin sheets (the flat sheet for the back and the fitted sheet I cut the sashing)