Tesco's have a lot of toys on for half price, maybe just have a walk in there and look around for inspiration, something might grab your attention for him. My nearly 5 year old nephew is into Toy Story so he is getting the Woody Toy Story remote control car from me, a Toy Story backpack, Toy Story bath set, Toy Story stationery, Toy Story clothing and a few other bits. His parents (Santa) are getting him a Nintendo Switch because he loves Mario and walkie-talkies.