To create interactive quizzes or activities to engage employees during the training session on the topic of 'Risk-Based Thinking' in ISO 9001:2015, you can consider the following ideas:

1. Scenario-based quizzes: Present real-life scenarios related to the organization's processes and ask employees to identify potential risks and opportunities. This can help them apply risk-based thinking in practical situations.

2. Role-playing exercises: Divide employees into groups and assign them different roles within a process. Have them discuss and identify risks and opportunities from their perspectives, encouraging collaboration and critical thinking.

3. Gamification: Develop a game or simulation that challenges employees to make decisions based on risk assessment principles. This can make the training session more engaging and interactive.

4. Interactive case studies: Provide case studies relevant to the organization's industry or processes and ask employees to analyze the risks and opportunities presented. Encourage discussions and group work to enhance learning.

5. Polls and surveys: Use polling tools to gather employees' opinions on risk-based thinking concepts or conduct surveys to assess their understanding before and after the training session. This can help tailor the training content to their needs.

By incorporating these interactive elements into your training session, you can make the topic of 'Risk-Based Thinking' more engaging and facilitate better understanding among employees.