Yuki Tatsumi was working as a waiter in a restaurant when one day, as he was cleaning up a table, he noticed that a customer had intricately folded up the paper chopstick sleeve and left it behind. Japan doesn’t have a culture of tipping but Tatsumi imagined that this was a discreet, subconscious me

Source: Japanese Tip: An Exhibition of 8,000 Chopstick Sleeve Sculptures Left Behind at Restaurants