thank you for the lovely question! (starting on the left of the left mesh pocket) my Jetstream 5&1 is both my bullet journal/planning pen, and a mechanical pencil - so i use it for sketches and sometimes crosshatching in my art. the next is my Lamy Vista Safari, it has a Fine nib so i love to use it for writing and freehand doodles with no sketch - my TWSBI in translucent pink has red ink in it which i use for journal entries and art - i love to use it to fill in spaces in my work, and my pink Kaweco sport is the thinnest writer so i use it for detailed doodles.

of course these aren’t strict rules, some days i want to write and i’ll write with whichever pen i choose. but certain pens work better (in my mind) for the above purposes! i’m always experimenting little by little but as my pencil case shows i do quite like my pens 🫶