HomeBlogs Ultop An ultop is a traditional toy, made from bamboo and common in the Batak
Highland of northern Sumatra, Indonesia. Children often make this toy.
ultop consists of two pieces. The first is a small bamboo with a
diameter around 2-5 cm, the inside of which is shaped like a funnel. Two
edges of the bamboo are cut until both edges can be seen through the
funnel. The second piece is a rod with an outside diameter slightly
smaller than the inside diameter of the funnel. Grain or fruit, slightly
larger than the diameter of the funnel, is placed in the funnel and the
rod is pressed against it as hard as the child can. The fruit or grain
will be forced out with great speed and the sound like a small
explosion. This makes it the local equivalent of a pop gun.