1. Portfolio Website: Basic static site to showcase work, using Next.js's routing and SSR.
2. Blog with CMS: Build a blog with dynamic content using Next.js API routes and a headless CMS.
3. E-commerce Store: Develop a full-fledged online store with Next.js, integrating payment gateways.
4. Real-time Chat App: Create a chat application using Next.js with WebSocket integration for real-time messaging.
5. Social Media Platform: Build a scalable social network with Next.js, using MongoDB for data storage.
6. Dashboard Application: Develop a dashboard for analytics or admin purposes using Next.js SSR for fast rendering.
7. Progressive Web App (PWA): Convert a Next.js app into a PWA with offline support using service workers.
8. Serverless Functions: Implement serverless functions with Next.js API routes for backend operations.
9. Multi-language Website: Create a multilingual site with Next.js, supporting localization and internationalization.
10. Content Sharing Platform: Build a platform where users can share various types of content, using Next.js for dynamic rendering and user authentication.