I often want event ideas which are unique and out of the box. I find that Youtube is certainly a very good resource for this sort of ideas. All you will have to do is browse Youtube and perform a search for "birthday party suggestions" and you will find several hours worth of videos with various terrific advices. The issue is, who exactly has time to view them all? Thus I am on a constant quest to collect some notes to save me and hopefully others some time.
Here is a great video with some crazy party ideas - https://www.youtube.com/watch?v=wUlJSgYGmFw
Hope you find a number of great tips for your future event on Youtube!