Technoweenie and Kneath collaborated to develop the "Calendar About Nothing," a tool designed to visually track open source contributions over time, encouraging users to maintain their contribution streaks. To set up the calendar, users simply need to send a private message to the GitHub user "calendaraboutnothing." The project is open source, allowing for community involvement and transparency, and was created by Chris Wanstrath, also known as @defunkt on GitHub.