I frequently search for party tips which are unique and out of the box. I find that Youtube is normally a wonderful source of this kind of ideas. All you have to do is browse Youtube and do a search for "birthday party ideas" and you can see several hours worth of clips with numerous very good points. The issue is, who has enough time to see them all? So I am on a regular quest to collect some notes in order to save me and also hopefully others some time.
Here is an awesome video with some insane party ideas - https://www.youtube.com/watch?v=wUlJSgYGmFw
I hope you see some good tips for your next event on Youtube!