DS's birthday is next month and I'm stumped for a present. DS is currently vehicle and ball obsessed. He has a balance bike and godless-mother is giving him a scooter. He says he'd like a pogo stick and skateboard but obviously he's too little for those. He has far too much already and I don't want to end up buying something for the sake of it. He is incredibly imaginative; maybe I should just give him some cardboard boxes, but I am just wondering if there is some classic essential that I haven't thought of. What do 3 year old boys like? i.e what is he likely to grow into over the next 6 months?