Probably the pressurized ballpoints like the Space Pen: https://www.jetpens.com/blog/The-Best-Pressurized-Ink-Pens/pt/748 https://www.jetpens.com/blog/The-Best

Probably the pressurized ballpoints like the Space Pen: https://www.jetpens.com/blog/The-Best-Pressurized-Ink-Pens/pt/748 https://www.jetpens.com/blog/The-Best-Pressurized-Ink-Pens/p... They don't write as nicely as fountain or gel pens, but when you need to write on receipt paper or a waxed carton, they will work. You can put the Fisher Space Pen refills in any pen that takes a Parker ballpoint refill.