I launched a product on Sunday (https://vim.so) that teaches developers how to learn vim faster with interactive exercises.
It's made me $376 since launch.
The coolest feeling though, is waking up and seeing people have purchased my product while I've slept.
So I made a python script that will find out how much money you've earned on Stripe during your normal sleeping hours.
You can see the script here and run it on your own account :)
Feel free to share numbers if you'd like, it'd be interesting to see what people have earned while sleeping!