Combine business with pleasure and let the kids have their own little summer shop. Make your kids sort out their toys and decide by themselves what they want to sell. That will probably be so much easier when the motivation is an ice cream or even a new toy (depending on the success of the sale). Write a billboard, sew some flags for decorations, prepare some cold refreshments for your happy customers, fill your pockets with loose change and find a place (preferably in the sun), where people pass by and can see the little shop. Then just wait for the first customer to arrive…..