Lunch roulette

Idea:

Employees of a company are randomly brought together for lunch - either onsite or online. The aim is to promote exchanges between people who previously knew each other little or not at all, to overcome hierarchies and departmental boundaries, and thus strengthen innovation, knowledge transfer, and internal networking.

Implementation:

Participants are randomly matched (manually, via Excel, or with digital tools) into pairs or small groups (ideally 3-4 people) and receive an invitation with information about the time frame and meeting point. An open exchange takes place over lunch together. The content of the discussion can be freely chosen, but suggestions for topics can make it easier to get started.

The Icebreaker Bot is an open source app for MS Teams that enables random pairing of team members:
https://techcommunity.microsoft.com/t5/microsoft-teams-blog/icebreaker-bot-assisted-happenstance-to-strengthen-your-company/ba-p/722552

“Mystery Lunch” is a commercial provider that offers a technical platform for organizing lunch roulette. In an interview with Manager Magazin, one of the founders, Christoph Drebes, describes the idea:
https://www.manager-magazin.de/unternehmen/karriere/mystery-lunch-warum-sie-mit-fremden-zu-mittag-essen-sollten-a-1178303.html

In addition to Mystery Lunch, Workdate is another commercial provider that simplifies the organization of lunch roulettes:
https://workdate.com/de/