I’m not the biggest fan of ballpoint pens, so I usually opt for gel pens. This is the one I’m using and I love it so far. https://www.amazon.com/Pilot-Erasable-Ballpoint-0-38mm-LKFBS60UF-PG/dp/B07JBVLW6K/ref=mp_s_a_1_3?keywords=.38+Frixion+pen&qid=1650566394&sr=8-3