What are the top productivity hacks you've discovered using GitLab for project management?

I’ve been using GitLab for a while now and have explored several features to streamline my workflow, but I’m curious to learn more. What are some of the lesser-known tips, tricks, or hacks you’ve implemented that have significantly improved your team’s productivity in GitLab? Whether it’s about automating processes, using CI/CD pipelines more effectively, or managing repositories efficiently, I’d love to hear your thoughts!