R.
Lego's...there are Duplo for his age. Coloring or painting stuff would work. He needs something for sitting up not running around. Cars woiuld go vroom on the tray and crash to floor...no good unless he has someone to play with who can get them. A musical toy...like a piano. *with volume control*. Or even his first computer learning toy...there are several out there to look at.
Don't forget mom and dad. They could use something to enjoy...soda, coffee, food, a toy they can play with too *play doh, painting* *cars for dad* hehe.