I often try to find party approaches which are unique and out of the box. I learned that Youtube is normally a very good source of this kind of tips. All you have to do is go to Youtube and do a search for "event ideas" and you will find many hours worth of video recordings with a lot of wonderful points. The issue is, who has the time to watch them all? So I am on a constant quest to collect some details 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
I hope you find a number of good tips for your next gathering on Youtube!