I drew these COVA sketches with the hardest lead pencil I could find. When I draw, my lines tend to be very very heavy; that is I push really hard. So I figured the light lead would either help me stop doing that or make it so it was okay to push hard. There's the other possibility that it was reinforcing the bad habit. I'd like to hear from some art people on that.
This is a drawing of another toy in my room, and it was interesting because this is a 2d drawing of a 3d toy modeled after a 2d character.