A user named Stuart Logan created a Lord of the Rings-themed scavenger hunt using Twilio Studio and WhatsApp. The scavenger hunt was built for his wife's birthday, but it can also be used as a lockdown activity. To build the scavenger hunt, users need to sign up for a Twilio account, set up a WhatsApp sandbox, and create a flow in Twilio Studio. The flow includes clues with quotes from the Lord of the Rings stories, which lead to hidden locations and presents. Users can customize the flow by adding their own quotes, functions, and widgets. Once the flow is set up, users can use the WhatsApp sandbox to connect to it and play the scavenger hunt. The author provides a JSON file and instructions on how to import it into Twilio Studio, as well as a tutorial on how to add the function to the flow.