for the past 10 years every year a little preschool class makes 2 crayon quilts. I iron freezer paper to the back of white muslin 'blocks' and take them in to the kids, they set about coloring their blocks how ever they want (sometimes the teachers incorporate a theme) when all blocks have been completed I gather them and cure them for at least a day or 2 then heat set them...if a child was a little too light and i can without making any differences i touch up a little and heat set 2 or 3 times...then i cut strips (3" wide) of all my brights, primaries, what ever is going to go with the pictures and a take a little singer with me, each child gets to pick out the strips they like and set down at the machine and frame their block, then i take them home again, sew them together, and finish the quilts taking them back for what ever they do with them