There are many ideas event planners use to stimulate engagement during the event. Some bring comedians, others commission Cirque du Soleil style shows, hire magicians etc... You name it and it has been done, especially in North America where events get additional, hype which I think is pretty cool.
I personally see the value events don't necessarily need to be serious and academic and networky all the time. Well, what if you could invest your money in something that will actually generate excitement, buzz, shares, a twitter frenzy, awareness and, more importantly, an everlasting memory of your event?
Try attempting to break a world record title and give yourself the chance to join the likes of Usain Bolt and Richard Branson by being in the Guinness World Records book!