Spotted some great use of VR/AR at an event lately?

Hi everyone. I’m researching the coolest ways to use augmented reality and virtual reality at expos/trade fairs and will be sharing my finds on the Eventbrite blog.
It’d be great to hear from anyone who has spotted something smart/innovative/plain awesome at an event lately. Or perhaps you have been experimenting with ar and vr yourself. I can include a nod to you/your company.