Simone Giertz, a YouTube celebrity famous for her hilarious robotics inventions, has announced her first hardware product for sale — the "Every Day Calendar" that motivates you to keep the momentum of any good habit.
She's running a Kickstarter campaign and plans to ship the bamboo-framed gadget in December 2019.
In case you aren't a perennial procrastinator and wish to develop a habit before the end of 2019, this web app of Every Day Calendar serves as a virtual substitute. It stores all your achievements in your browser without sending anything to the server. The project is open-sourced at https://github.com/zmxv/everydaycalendar.
Disclaimer: I am not affiliated with Simone Giertz's Every Day Calendar project. I built this site out of admiration for her engineering ideas.