Sure, one tool that comes to mind is mindmeister. It's a cloud-based mind mapping tool that helps teachers and students visually organize information. It's great for brainstorming, note-taking, project planning, and more. Plus, it integrates with Google Workspace and Microsoft Teams for easy sharing and collaboration. You can customize the themes, choose from various map layouts, and collaborate in real-time. It's also quite affordable with plans starting at $1.75 per month.