I typically look for event approaches that are unique and out of the box. I found that Youtube is usually a terrific resource of this kind of tips. All you will have to do is browse Youtube and do a search for "event suggestions" and you are going to see many hours worth of movies with countless very good tips. The problem is, who exactly has time to see them all? Thus I am on a constant quest to collect some notes so as to save me and hopefully other people some time.
Here is an awesome video with some insane party ideas - https://www.youtube.com/watch?v=wUlJSgYGmFw
I hope you find a number of great tips for your future gathering on Youtube!