I usually look for event approaches which are out of the ordinary and out of the box. I think that Youtube is normally a very good source of these sorts of tips. All you will have to do is browse Youtube and do a search for "event ideas" and you are going to find hours worth of clips with plenty of wonderful ideas. The problem is, who exactly has enough time to see them all? So I am on a continuous quest to compile some notes to save me and also perhaps 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 good tips for your upcoming party on Youtube!