This is a real-time food ordering system. Think about DoorDasher with a RealTime Twist. You can invite a group of people and order food collaboratively.
As a group leader, you can start a group food order. You can share the URL with others, and other users can join in your session. Once user join in, they can add their food order to the main order. All users will see each other's food order - and can collaborate on picking up food. Once everybody is done, you can place the order.
This project isn't complete yet. Need more reactjs examples for Real Time Presence and Broadcast. I struggled with getting Presence API working for REACT Application.