The didgeridoo is an Aboriginal musical instrument that has been used for many thousands of years. The didgeridoo is made of dead branches that have fallen on the ground.
The Aborigines keep the wood in the sun until it is completely dried out then they encourage termites to attack the wood and hollow out the centre. They then burn the ends to seal them off for use.
Since the didgeridoo has become a popular tourist item, many of these instruments are now made in Bali, Indonesia, of synthetic resin that involves no termites. The dots are pretty much the same, however, the resonance is different.
Boomerang
Do boomerangs always come back? It's one of the unexplained mysteries. The amazing part about Aboriginals was that they could throw the boomerang, kill their pray and then the boomerang would still come back.
Onkaparinga
The Aboriginal expression "Three dog night" came about because on especially cold nights these nomadic people needed three dogs (dingoes, actually) to keep them from freezing. One of Australia's best known rock bands took its name from this Aboriginal custom. Onkaparinga, the name of Australia's most famous brand of woollen blankets, also means just that in Aboriginal: A three dog night.