I routinely seek out party tips that are out of the ordinary and out of the box. I learned that Youtube is truly a very good source for these sorts of ideas. All you will have to do is check out Youtube and perform a search for "event suggestions" and you are going to see hours and hours worth of videos with various terrific points. The issue is, who has the amount of time to view them all? So I am on a regular mission to gather some notes to save me and perhaps other people some time.
Here is an awesome video with some insane party ideas - https://www.youtube.com/watch?v=wUlJSgYGmFw
I hope you find several great ideas for your next gathering on Youtube!