I regularly try to find party tips that are unconventional and out of the box. I think that Youtube is definitely a great source of these sorts of ideas. All you have to do is head to Youtube and do a search for "birthday party suggestions" and you will see several hours worth of video recordings with a lot of great suggestions. The problem is, who exactly has enough time to view them all? So I am on a regular quest to collect some notes so as to save me and also perhaps others some time.
Here is a great video with some insane party ideas - https://www.youtube.com/watch?v=wUlJSgYGmFw
Hope you find a number of great tips for your upcoming celebration on Youtube!