One thing I have learned recently it little ones LOVE things with their names of it. My great niece and nephew are 5 (twins) and I made them pillow cases with little sayings on them that included their name and they were so excited. They share a bathroom and so I embroidered Christmas towels with their names on them - they refused to put them away after the season ended. A friend of mine had 2 foster children (3 & 5), I did towels for them with their names on them and the 3 year old little girl claimed it as her "Blankie". It goes with her everywhere. She was so excited that it was hers, because it had her name on it. I was so surprised, she was showing it to everyone that would look at it.
So make him a TV watching blanket, it will be his, and his alone, because it has his name on it.