I was learning how to make an OS, mainly for fun cause I was bored during lockdown school (I had a free lesson). When I got home I decided to tweet this:
Reply to this tweet to get your own OS which does nothing but prints your name (or a message of your choice) to the screen!
— Amy (@amyabie) February 24, 2021
This was a lot of fun and made me actually add a decent printf to my kernel.
Why not? Its a great learning experience, and you can have a lot of fun while doing it! You could start by learning how mine works by looking at my source.