What's the purpose of a little tab at the end of chopsticks?
Chopsticks are kitchen/eating utensils that are shaped pairs of equal-length sticks that have been used in East Asia for over four millennia.
First invented and used in China, chopsticks later spread to countries that were tributary states of the Empire of China. In Southeast Asia, only Vietnam and ethnic Chinese communities consume all food with chopsticks. In Cambodia, Laos, Myanmar, and Indian and Malay communities in Singapore and Malaysia, as well as in Nepal, chopsticks are generally used only to consume noodles. In Thailand, chopsticks have only recently started being used along with the spoon and fork.
This block is meant to be used as a resting table for the Asian utensils.