Where do rain sticks come from?

Where do rain sticks come from?
rain sticks come from a cactus. this is how you make one...you get a cactus, of couse, it must be dried up and in good condition.then, pound all the spines inward, so you cannot see them anymore.after that, sand down all the edges so your rain stick looks at its best.finally, add beans or something that makes a good ratteling noise into your cactus,and fold the top and bottem up so you cannot see the inside.