Boo Rattles Made from quality, cured, phyllostachys bamboo, these rattles can give a wide range of sound. The smaller culms that are bundled in the larger culm can be removed, reduced or added to so as to change the sound. It is also possible to add other items you find or have to change the percussion sounds of this versatile device. By holding the Boo Rattle in different places, various shaking rhythms can be achieved due to the balance. In addition the main large culm has guiro notches carved into it in a variety of numerical sequences. These notches can be rubbed with any of the accompanying culms (sticks) for various sound patterns and rhythms. If 2 of the Boo Rattles are purchased together they may be emptied of their contents and the flat part of the bases of both bamboo culms may be struck together for wooden drum sounds much like stamping drums. Or using a brick or rock and a thick piece of cloth, each of the culm bases may be struck against the cloth covered brick. Boo Rattles have been heat treated and lightly oiled. I am offering 2 sizes - Large - 1-2 inches diameter 12 inches long (main section) $40. or pair $75. and - Timber - 2-4 inches diameter and 12- 18 inches or longe (main section)r = $50. or pair $90. A Boo Rattle is having several percussion instruments in one device. Boo Rattles look good in the studio or as a sound sculpture in your house. Richard Waters