If you watch 'THE OFFICE', please advice me on this Christmas gift?

Do the bobblehead. At least you're not destroying the gift with the Jello :) If he appreciates the bobblehead half as much as Dwight did, he'll be a very happy man. Who wouldn't want to see their own likeness on a bobblehead? It's a personal gift and creative (outside of TV). If I never watched The Office and saw it, I'd really think whoever did that was really cool.