Halloween fun doesn't have to cost the planet. Not everything we do is perfect, but a charity shop dress, a borrowed top, reusable spider buns and pumpkin soup are little steps in the right direction, without taking the fun away from the children.

Children's resale is heading for $12.8bn by 2030, a genuine new revenue stream for brands, not a threat. But not everything should be resold: some items are unsafe or even illegal to sell second-hand. Three resale models to learn from, which children's products you can and cannot resell, and how to open resale without taking on the heavy logistics.