"Phone stacking" is when people all place their electronic gizmos together in a stack at the start of a meal and the first person who crack and checks a text message (or anything on their phone) has to pay for everyone's meal. It's a fun way to ensure everyone is fully present.
So, why not try a version of this for your next meeting, offsite retreat, or business lunch? Violators might have to pay a $20 fine towards your charity of choice/social committee fund, sing a song, or dance an Irish jig.