Clatter blocks

See introduction at this link.
Clatter blocks are strung together so that by holding the top one and moving it back and forth, each of those below it takes a tumble down the line. You need seven blocks from 1/4" wood, each 2 1/2" square. Weave 1/4" twill tape in the pattern shown and use staples or small tacks to fasten them to the ends.