I'd like to get DS (7) something for the garden this summer to keep cool, but preferably not a paddling pool. We already have one, and I spend an age filling it up, only for him to decide it's too cold and he doesn't want to play in it. He's an only child and I can't help but think if he had a sibling they'd work together to find ways to make it fun. Anyway, is there anything else I could use that might entertain him for longer and keep him cool at the same time? He used to have a water and sand table as a toddler. Splash pads look good but I'm not sure if they're really for toddlers as well?