I normally look out for event ideas that are out of the ordinary and out of the box. I find that Youtube is generally a good source for these kinds of ideas. All you need to do is head to Youtube and perform a search for "party tips" and you are going to find many hours worth of video clips with lots of exceptional suggestions. The trouble is, who exactly has the time to see them all? Thus I am on a regular quest to put together 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 several great ideas for your next event on Youtube!