HELP! I need 10 year old boy- party ideas

My sister is having a sleepover birthday party for her boyfriend's son this weekend with 11 of his friends.

It started out as 5 kids plus my DS coming. And now we are up to 11. So... she asked me to come for backup and we need some good party ideas.

We are definitely going to to a movie and...??????? We don't know what else..

Any ideas? Fun games?

My only other idea was make you own ice cream sundaes.

She has a big trampoline which we thought would be fun. But it's supposed to be bad weather now.

Re: HELP! I need 10 year old boy- party ideas

I like the ice-cream sundaes !

Also, how about a neighborhood scavenger hunt ? You need a few adults , one for each team

Maybe a WII tournament ?

tye-dye tee shirts ?