I commonly seek out event tips that are unusual and out of the box. I learned that Youtube is generally a great resource of this kind of ideas. All you will have to do is browse through Youtube and do a search for "event suggestions" and you can see hours and hours worth of videos with plenty of very good suggestions. The issue is, who exactly has time to watch them all? Thus I am on a constant quest to compile some details so as to save me and hopefully other people some time.
Here is an awesome video with some crazy party ideas - https://www.youtube.com/watch?v=wUlJSgYGmFw
Hope you find a few great tips for your next celebration on Youtube!