This is what I’ve been using: https://www.jetpens.com/Uni-ball-Jetstream-RT-Ballpoint-Pen-0.7-mm-Black/pd/39668 https://www.jetpens.com/Uni-ball-Jetstream-RT-Ba

This is what I’ve been using: https://www.jetpens.com/Uni-ball-Jetstream-RT-Ballpoint-Pen-0.7-mm-Black/pd/39668 https://www.jetpens.com/Uni-ball-Jetstream-RT-Ballpoint-Pen-... Although lately I’ve been using this multipen: https://www.jetpens.com/Uni-Jetstream-3-Color-Ballpoint-Multi-Pen-0.7-mm-Dark-Black-Body/pd/9908 https://www.jetpens.com/Uni-Jetstream-3-Color-Ballpoint-Mult... It’s nice having 3 colors of ink available, and it’s not that chunky blue thing we had in elementary school.