Located in one of the most densely populated places on earth, one Gaza Strip cafe aims to change how residents view waste by serving up recycling education as refreshing as their signature coffee.

The beachside venue is part of the "Sea is Ours" cooperative, a complex built of reused wooden poles, plastic jugs, tires and broken bricks by local playwright Ali Mhana and a group of friends.

"My mother wanted me to become a physician," said Mhana, whose office there features a refrigerator door and windows that used to be washing machine doors.

"I don't have to be a doctor for humans. I can be the doctor of the sea, a doctor of the community that suffers several illnesses."

Dressed in a blue uniform, Mhana aims to ease at least some of those conditions through activities at a site that also houses a library, theater and open event spaces where young and old can learn about conserving the environment.

"Jeans became plant vessels and a fan became a light decoration," said mother-of-four Haneen Assamak after learning how things she used to throw out can be reused.

"We planted in empty jars, and the bottles were filled with sand and lights," said Assamak, who now has a corner at home where she collects objects to be brought to Mhana for recycling.

"To me, this is happiness," she told Reuters, sitting on a colorful chair made of car tires.

Mhana said children visiting the site, which was provided by the Gaza municipality, instinctively understood the need to protect the environment.

"The recipe comes from them. When I ask what we can do to treat the sea, they say we can have a cleaning campaign, hold signs and go down and talk to people," he told Reuters.

As well as bringing in other material for recycling in lieu of payment, customers seeking to rent an open space for an event can also volunteer an hour of their time to help pick up litter at the beach. Mhana's cafe is one of many creative approaches to business in the Gaza Strip.

A Gaza Environment Quality Authority official said 2,000 tons of solid waste is collected in the Gaza Strip every day. Over half of it comes from homes, and thousands of Palestinians earn money selling material to recycling factories.