Oh - I hear you... I really dislike other people's kids unless I like their parents..
How about swimming? I've seen birthday parties at the YMCA... I remember when I was that age, a girl had her birthday party at the Y and then go for pizza? Do you have a Happy Joe's? Shoot - I just looked, it must be a midwest thing... maybe you have something similar... pizza place that has a small arcade. Not as crazy (or germ-laden) as the Chuck.
Does he have any other likes... planetarium? natural history museum? Children's Museum?