Four Square St Johns is supporting the City Mission foodbank, and giving people a sweet treat as well.
During the school holidays Four Square St Johns hid painted rocks by Virginia Lake. When a child found a rock and returned it to the shop, they received a free icecream, co-owner Trin McCarthy says.
"It went very well. It generated a lot of interest. The kids would be so proud that they had found one of the special rocks, and were even more pleased when they were rewarded with an icecream for their efforts.
"Tip Top actually donated us some icecream for this which we are grateful for."
As well as receiving a free icecream, each time they returned a rock, they were helping the City Mission Whanganui Foodbank.