sound，while turning it slowly will produce a deeper effect.How long the effect 1asts depends on how long the instrument is.The tube also affects the quality of the rain sound as well.If you make them from some kind of absorbent material，like cactus or bamboo，you will hear it better than if you were to make it from cardboard tubing.

　　A rainstick can be made from almost any kind of material and the types of things that you can use as fillings can be even more varied.

　　41.Usually，these school projects are made using a cardhoard tube，like the center from a roll of toilet paper or a paper towel tube.Tooth picks are then inserted，with the exposed ends cut off and glued in place.

　　42.

　　A.You can even make your own rainsticks，and they are often part of school projects where they are used to help children learn the history of Indian peoples.

　　B.When turned upside down，these materials fall down through the tube，bouncing off of the barriers to produce a calming rain-like sound.

　　C.These were then capped with pieces of wood on the ends and used in ceremonies to bring rain to their crops.

　　D.One end is capped off with poster board and filled with rice or beans，and then the other end is sealed.

　　E.You can get different rain sounds，depending on how fast you turn the rainstick itself.

　　F.This rainstick can never be opened according to the scared writings of the ancients.

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