J.U.
Puzzles, lace cardboard animals (I'm not sure what they are actually called but you lace holes with a shoe lace like string), age appropriate scooter, large blocks, race cars, memory game, magnet games for the fridge, dry erase work books, books, if he doesn't put things in his mouth you can check out the age range for a light bright?, I saw a scooby doo haunted house with Shaggy & Scooby. What ever he is into I would try to go that route.
One other suggestion would be to go online either to Walmart or Toy r us for ex. and search his age range and it will bring up toys, electronics, riding toys etc.
Good luck!