Next kit to buy

My 3.5yo son and I built the Ford Bronco 42213 on Australia day, as we were both suffering from man flu, so couldn't go out. He loved helping / hindering me build it, and now loves playing with it. (He wants to cuddle it too sleep at night instead of his pillow, but I don't let him :-P) I really like how sturdy this build is, hardly any pieces are loosly attached, (recovery tracks, number plate, rear bumper are the only things that fall off), he also loves opening and shutting the doors,...