Any ideas for games to play at my nine-year-old's birthday party?

Make a Fear Factor game. My nephews love this! You can create a race/obstacle course, balance beam and collect flags along the way, use any wheeled vehicles you have, bikes, scooters, skate boards that they have to use as transportation on the courses. And for the eating gross things stunt, make a jello mold of brains, or you can buy gummy worms, candy bugs. And of course PRIZES at the end.

Get some of those "fill in the blank" word games (can be found at dollar stores), try craft projects like simple friendship bracelets etc. that they can draw a name and exchange after their made!! I tried games my kids thought were childish like duck, duck, goose, until they relized they still had to be pretty fast to "still play those dumb games!!" How about "pin the ponytail" on their fav singer??

invite his friends, have cake and pizza, or what every food you would like. get a little game they can play such as a video game. boys really dont care about all the extra stuff!

the age old pin the tail on the donkey works....

hm...how bout hide and go seek lol XD