"Diamond and graphite (pencil 'lead') are two allotropes of carbon: pure forms of the same element that differ in structure" - Phew, thanks Wikipedia,
This suddenly occured to me one day and I came up with this design. I'm not sure if it's too simple for threadless these days, but I just really liked this bold design and hoped it might appeal to the pencil wielding heroes here.
A 4 colour design (or 5 if you want it on another coloured tee)
And remember, if the pen is more powerful than the sword, maybe the pencil has more value than a diamond... or something.
Anyway, thanks for looking and voting. And bigger thanks to iRocko for the tee shot.