We began his birthday celebration at a place with all the bouncy slides, etc. It's not my favorite place on the planet, but the kids enjoyed themselves thoroughly so who I am to judge?
If you want to please Henry give him gift cards. The first of them came from his parents and was to Harbor Freight Tools. Free money to the hardware store means that he got to buy all the gadgets. He loved it. Then to the Walmart for toys. Oh he's so funny and careful. He THINKS about his purchases. It is great. And takes a super long time.
Basically, his birthday lasted for days, just the way he likes it.