Collaborative strategies that can be employed to strengthen brainstorming sessions among UPSC aspirants include establishing a structured format, setting clear goals, and utilizing digital tools for idea sharing. By designating roles within the group, such as facilitators or note-takers, discussions can remain focused and organized. Leveraging technology, such as online collaborative platforms, allows participants to share resources and ideas in real-time, enhancing engagement. Utilizing visual aids like charts or lists can help clarify concepts and promote deeper understanding. Lastly, ensuring an inclusive environment encourages all voices to contribute, enriching the collective knowledge of the group and leading to innovative solutions.