When considering how to use any asset at an event, there is a tried and true creed. Keep it simple. Adapt virtual reality around what you want to achieve at your next event, and not the other way around. At the same time, don't be shy to think outside the box for your attendees who will be looking in - there are several approaches to take when using virtual reality headsets, and each have their own strengths to lend.
Want to use it as a draw, to show a video or experience that others can experience at their leisure? Consider adapting the packaging of your product to accommodate for Google Cardboard, or another phone VR solution. Whether you choose to go the Cardboard route, or redesign part of your product or advertising to be turned into a headset, it is an inventive way of making branded content that opens a wider world to your audience.
Make sure that your audience gets a good chance to be hands on with it during the event. Keep them front and center - Virtual reality is still a new concept that can draw in curious people on the concept alone, and even if what you use it for is simple, the novelty of the experience can have natural pulling power all on its own.
Now comes the factor of exactly what you want to use VR to show. Product demonstrations are a strong choice, with the practicality of easier setup, less cleanup between showings compared to conventional displays, and the uniformity of the experience for everyone who engages with it. In several cases it can even help demonstrate experiences or products that have yet to hit the market or would otherwise be unsharable with such immersion in an exhibition space.
For a more offbeat use, you could consider tapping into nostalgia or reinventing something otherwise mundane to make your booth more memorable. Recreating video rental shops is one common trend, but others have chosen to let people relive other experiences that have now fallen by the wayside in these modern times. Taking something expected and adding a virtual spin gives people a personal connection, which can later be expanded on.
Another way to achieve that personal connection is to put the audience into your story, and virtual reality's immersive qualities make it fantastic for this effect. Whether it be a short film of your company's development through the years, a lifestyle experience that sells the dream, or even something truly out there like putting the viewer in the position of your product, there are countless ways for storytellers to use virtual reality.
And, finally, let us not forget the utility of VR. Creating a mock up of your booth before the event can help you explore several creative layouts, figure out what will work best for your needs without the need for construction, and preserve your booth in virtual space for years to come. You could even begin to think fully digital - What if, in the future, you host the event virtually exclusive?