To create interactive quizzes or activities to engage employees during training sessions on 'Risk-Based Thinking' in ISO 9001:2015, you can incorporate various methods such as:

1. **Scenario-Based Quizzes**: Develop scenarios that employees might encounter in their roles and ask them to identify potential risks and suggest mitigation strategies.

2. **Role-Playing Games**: Assign roles to employees and simulate a process where they must identify and address risks, encouraging them to think critically and collaboratively.

3. **Interactive Workshops**: Conduct workshops where employees can map out processes, identify risks, and propose solutions using flowcharts and risk matrices.

4. **Group Discussions**: Facilitate group discussions where employees can share experiences and insights on risk management, fostering a collaborative learning environment.

5. **Gamification**: Use game elements like points, badges, or leaderboards to motivate employees to participate actively in identifying and managing risks.

These activities can help employees internalize the concepts of risk-based thinking and apply them effectively in their daily work.