A gate made of plastic bottles.

A student buys three to be named “Mr. Organic,” “Mr. Inorganic” and “Ms. Recycling.”

Mrs. Tan from Le Lai Street brings a big bag of secondhand clothes to exchange at the festival.

Books and magazines are also exchanged.

A girl is seeking for a satisfactory item in a secondhand clothes stall.

A stall for used bags.

Duong went to the festival with a group of students from Hanoi University of Social Sciences and Humanities. She said she exchanged some used clothes.

Duc, from the University for Natural Sciences, is trying on a secondhand pair of shoes.

A young girl “wears” a dustbin with visitors’ signatures.

An old man brings a pair of glasses. They are too old to exchange, but the glasses can still be donated to the poor.