Provide the Essential Tools

At the BMF Music Lounge during Coachella, sponsor Tide gave guests all the elements needed to take a selfie and easily share it. In a poolside suite at Palm Springs's Ingleside Inn, the brand decked out a mirror with floral appliques as well as the appropriate hashtag #TidePlus.
Photo: Lisa Rose
4. Provide a Memento

Services like Instaprint are popping up at many affairs, proving popular with guests as a tangible record of their active social media use. At a fashion show held by USA Network in New York, even the wall the machines were mounted on sported the hashtag, motivating curious attendees to snap a photo and post it via Instagram.
Photo: David X Prutting/BFAnyc.com

To provide a view inside the Social Soul experience while maintaining complete darkness inside the room, MKG created a periscope-like window that people could look through via their smartphones. The agency created a separate hashtag, #socialscope, to track sharing of photos and videos taken through the window.
Photo: Kyle McDonald