Most chopsticks are made of "wood" or "plastic".
Some chopsticks are made of ivory, porcelain and other reusable materials. these can be washed and reused. Chopsticks made of wood cannot usually be reused as chopsticks, but they can be recycled as sources of wood fiber for paper making, or used as fuel in power or heat generation from waste.
Chopsticks
If the chopsticks are the disposable ones made out of wood, such as the ones found in some restaurants, then you could get a splinter.
If you wore chopsticks in your hair it'd pretty much be the equivalent to a westerner wearing a fork or knife in their hair. No one actually uses chopsticks in their hair, and if you see something you think are chopsticks, they're hair accessories made specifically for being hair accessories, not eating utensils. Most of these "chopstick" hair accessories are decorated and much shorter than chopsticks used for eating. Some Koreans use these hair accessories now but not many. It was much more common 50 years ago.
Wood, bamboo or mostly plastic.
The Shang dynasty (1600-1100BC)
The English word for chopsticks is chopsticks.
There is no specific collective noun for chopsticks, in which case a general collective noun is used. Examples are a set of chopsticks, a box of chopsticks, a supply of chopsticks, etc.
Wood (bamboo and other types) and plastic are the most popular materials for the construction of chopsticks. There are also metal ones, and there are others out there made of exotic or highly unusual materials.
they used chopsticks which was made out of wood
China, India, Vietnam, Tibet, and many others.
"Chopsticks are a pair of small, thin sticks used for eating Asian cuisine."