I normally hunt for party tips which are unconventional and out of the box. I learned that Youtube is usually a great source of this kind of tips. All you need to do is browse through Youtube and do a search for "party suggestions" and you are going to see several hours worth of movies with lots of terrific points. The problem is, who exactly has time to see them all? So I am on a constant quest to compile some notes so as to save me and also hopefully others some time.
Here is an awesome video with some crazy party ideas - https://www.youtube.com/watch?v=wUlJSgYGmFw
Hope you see several great ideas for your next party on Youtube!