rOtring 600 - Let's add a hidden ring that tells the user the lead type.
rOtring 800 - Let's add to that a sleeve that protects the lead in a pocket.
Uni Kuru Toga - Lets also rotate the lead so that it remains sharp.
Pentel Orenz Nero - Instead, we'll advance the lead automatically. Oh, and we'll support 0.2mm leads.
Pilot Vanishing Point - oh, heck, lets just have the most sensitive, wettest part of the pen crash into and smear the door every time it's used.


