I commonly try to find event ideas which are out of the ordinary and out of the box. I found that Youtube is truly a terrific source of these sorts of tips. All you have to do is browse through Youtube and perform a search for "party suggestions" and you are going to see many hours worth of clips with lots of good ideas. The trouble is, who exactly has time to view them all? So I am on a constant mission to collect some details to save me and also hopefully 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 good ideas for your upcoming gathering on Youtube!