They're fun, they're fairly fast going, and kids love them. I'm not so sure about others, but I use two of each square of an animal print, a car, sport ball, or cute doll print if for a girl. Etc, etc you pick 'em. When the child looks the quilt over they match up the pictures (blocks) and usually have a good time with them. Young kids of course. You also can use letters, or numbers, or shapes i.e. squares, triangles and so on. I made one that included bugs and funny little monsters. My granddaughter, age 4, loved it.
8)