David Allen, from Grafana Labs, discusses the creation of a "Meeting Cost Calculator" dashboard built using Grafana, which humorously tracks the real-time cost of meetings. Originating from a Perl script developed during his time in a government organization, the dashboard calculates meeting costs by multiplying the number of attendees by their average hourly rate, presented in engaging visualizations. Users input the number of attendees and estimated hourly cost to see live updates on meeting expenses, and they can share this data with colleagues in real-time. The tool also includes a playful "Business Buzzword Bingo" feature to make meetings more enjoyable by allowing participants to mark off common corporate clichés they hear. Allen encourages users to explore and customize the dashboard in Grafana Play, a public sandbox, and to share their adaptations with the Grafana community.