I routinely look for event ideas that are unconventional and out of the box. I find that Youtube is undoubtedly a terrific resource of this kind of ideas. All you will have to do is check out Youtube and do a search for "party ideas" and you will see several hours worth of video recordings with a large number of exceptional advices. The issue is, who exactly has time to view them all? Thus I am on a constant quest to collect some details so as to save me and also perhaps other people some time.
Here is an awesome video with some crazy party ideas - https://www.youtube.com/watch?v=wUlJSgYGmFw
Hope you see a few good tips for your future event on Youtube!