I regularly seek out party tips which are unconventional and out of the box. I find that Youtube is without a doubt a very good source of this type of ideas. All you have to do is go to Youtube and perform a search for "event suggestions" and you will see hours worth of video recordings with plenty of fabulous tips. The problem is, who has time to view them all? So I am on a regular quest to gather some notes so as to save me and also hopefully other people some time.
Here is a great video with some crazy party ideas - https://www.youtube.com/watch?v=wUlJSgYGmFw
Hope you find a few good ideas for your upcoming celebration on Youtube!