"One Camera, One Lens, One Year".
Photographer Mike Johnston, who runs The Online Photographer (TOP) and introduced the word "bokeh" to the English-speaking world, suggested this concept in a TOP blog post back in November 2014. He challenged photographers to use a single camera and lens combo for an entire year, carrying it with them everywhere and shooting at least 3-5 minutes a day. Most importantly, the challenge also included making a single standard-size print every day.
Here is a selection of some photos from my 2021 OC/OL/OY project. My lens of choice is 20mm f/1.7 on m4/3 format. (i.e. it's 40mm equivalent on 35mm full frame format.)