I normally seek out party approaches that are unique and out of the box. I think that Youtube is generally a very good source for such ideas. All you need to do is browse Youtube and do a search for "birthday party suggestions" and you will see many hours worth of videos with various awesome tips. The issue is, who has the amount of time to watch them all? So I am on a constant mission to collect some notes in order to save me and perhaps other people some time.
Here is a great video with some insane party ideas - https://www.youtube.com/watch?v=wUlJSgYGmFw
Hope you find several great tips for your upcoming party on Youtube!