Great ice-breaker. Ask everyone to get a partner (preferably someone they don’t know well). Each pair has three minutes to discover three things they have in common. They can’t be obvious things one could discover without having a conversation (e.g. “We’re both in this conference room” or “We’re both wearing glasses”). The conversation has to go deeper.
After three minutes, call time and ask people to volunteer to share out something they learned. This game is usually done standing, but if it’s a particularly shy or reserved group, you can lower the stakes by letting people remain seated.