I frequently try to find event tips that are unconventional and out of the box. I think that Youtube is generally a great source of these types of ideas. All you need to do is browse through Youtube and perform a search for "event tips" and you can find many hours worth of clips with various exceptional ideas. The problem is, who exactly has time to see them all? Thus I am on a regular quest to compile some details so as 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 a few good ideas for your next occasion on Youtube!