Do tumblers! Not "tumbling block" but the one that looks like a cup. I made my own template and it was about 3.5 inches on one side, 5.5 inches on the other, then the two long sides are equal...maybe 5.5" high? then you just cut, cut, cut and sew the tumblers one upside right, the other upside down and they end up in a strip. Match your strips so the "bottom" and "top" line up on each row, and ta daaaaa!