I always write/scribble with a pencil when possible rather than an ink-based device. Maybe it's a math-head thing β we have a fondness for pencils and chalk β I remember weeping silently when they removed the chalkboards from my classroom many years ago. π’
I often wonder if my choice of pencil is the norm. Being a HB it's about as imaginative as a colour-coordinated shoelace. What's your weapon of choice?