I often search for party tips which are unconventional and out of the box. I found that Youtube is undoubtedly a very good source for these types of tips. All you have to do is go to Youtube and perform a search for "event suggestions" and you are going to see hours worth of videos with a lot of wonderful points. The issue is, who has the time to view them all? So I am on a regular mission to put together 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
Hope you see several good ideas for your upcoming party on Youtube!