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 risks and opportunities in their specific areas of work, using tools like SWOT or PEST analysis.

4. **Interactive Flowcharts**: Use flowcharts to map processes and ask employees to identify what can go wrong at each step and how to address those risks.

5. **Games and Simulations**: Create games or simulations that mimic business processes, encouraging employees to apply risk-based thinking to achieve desired outcomes.

6. **Feedback Sessions**: Conduct interactive feedback sessions where employees can share their thoughts on risk management strategies and learn from each other's experiences.

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