In February 2021 my wife approached me with the idea to sell in-game items for the popular Nintendo Switch game Animal Crossing. I helped her set up an Etsy store, hack the Nintendo Switch and run it all for three months until Nintendo eventually sent a cease-and-desist letter.
As part of the ongoing effort to manage all the bookings coming in from all over the world I built an automated calendar. People would visit the site and make a booking for their preferred timespot. Once they did this booking would be transferred to a dashboard for us to view and manage. It also sent a Telegram notification, so that we would receive notices even when we weren't at home.
In the end we managed to process over 400 bookings while the Etsy store was online.