I commonly try to find event ideas that are unusual and out of the box. I learned that Youtube is undoubtedly a great resource of this type of tips. All you will have to do is check out Youtube and perform a search for "birthday party ideas" and you can see many hours worth of online videos with countless outstanding suggestions. The problem is, who has time to watch them all? So I am on a constant quest to collect some details in order to save me and perhaps others some time.
Here is an awesome video with some insane party ideas - https://www.youtube.com/watch?v=wUlJSgYGmFw
I hope you find a few good ideas for your future event on Youtube!