Does anyone know what games can be played to enliven the atmosphere in the experience introduction lecture? Are there any ideas besides quiz and lucky draw?

It is not suitable for playing games in lectures. This is not a theatrical performance. In order to enliven the atmosphere, when introducing your own experience, you can tell your own experience in some humorous language. Or express what you have encountered before, let the people at the scene explain their own practices, mobilize the atmosphere at the scene and attract their attention.

Personal suggestion: don't play any games during the speech, which will make the speaker and audience feel undignified.