Create a chat app where multiple users can communicate without refreshing page using Node.js, WebSockets, and sockets.io. Expand the app by adding features like a login form, offline/online label, & video calling.
Build a multiplayer game where players try to destroy each other's ships using Node.js, Express, and Socket.io. Start with single-player logic and turn it into a multiplayer game, then style it with advanced CSS.
Create an app to track payments from clients using MongoDB, Express, Node.js, and React. The app should allow users to save client details, create & send invoices, generate follow-up reminders, & more.