To create interactive quizzes or activities to engage employees during training sessions on 'Risk-Based Thinking' in ISO 9001:2015, you can incorporate the following strategies:

1. **Scenario-Based Quizzes**: Develop quizzes that present real-life scenarios related to risk-based thinking. Ask employees to identify potential risks and suggest actions to mitigate them.

2. **Role-Playing Activities**: Organize role-playing sessions where employees act out different roles within a process, identifying risks and opportunities as they go along.

3. **Group Discussions**: Facilitate group discussions where employees brainstorm potential risks in their specific areas and propose solutions collaboratively.

4. **Interactive Games**: Create games that simulate risk assessment processes, such as matching risks with appropriate mitigation strategies or using a risk matrix to evaluate scenarios.

5. **Case Studies**: Use case studies to illustrate how risk-based thinking has been applied successfully in other organizations, and have employees discuss how similar strategies could be implemented in their own work.

6. **Feedback Sessions**: Conduct feedback sessions where employees can share their thoughts on the risks they perceive in their daily tasks and how they think these can be addressed.

These methods can help employees internalize the concepts of risk-based thinking and apply them effectively in their roles.