There are loads of things to do with him and yes, he can help you about the house - just copying what you do. you could make dough and play with that, do little jigsaws, finger paint ( you can use ketchup on a chopping board). My boys used to like going to the pet shop to see the fish (far cheaper than the aquarium). If the weather was really bad, I used to take them to the local shopping centre to let them run about (during the day while it is quiet) baking is good - he will like messing about with bread dough or making pizzas. Put music on and dance about.