First Birthday ideas?? Please!

April

So my son turns 1 on the 18th and we are planning a family party at home. We will have about 15 kids. About 9 of them are between 6-14 yrs old. What are some of the games we can have to engage them? I was thinking treasure hunt and musical chairs but was wondering if it is old school? Any ideas? And also what kind of stuff can I get from the bakery as treats, besides cupcakes? Thanks.