Parents donated a range of cups and mugs — ''we wanted an eclectic mix, just like our community'' — and take turns to collect the used cups on Saturday afternoon, wash them, and return them the following Friday.
"They do hundreds of coffees a day in summer so it could be a good little fundraiser. And it's nicer drinking coffee from a ceramic cup," Simm said.
Head teacher Jo Johanson said the market's owners were "really on board".
"It's a bit more work for them but it's a win-win because it reduces waste and supports the community. We saw it as a way the kindergarten could raise money and send a message about living sustainably."
Kerikeri Kindergarten is part of the Enviroschools and Garden to Table programmes. Money raised by the rent-a-cup scheme will pay for more plants for the kindy's vegetable garden, new ferns for the fernery, and glassware to replace plastic cups.