No special materials used. Just my handy-dandy mechanical pencil. :D
Oh, no! The first one is missing a hand! Or maybe the hand just wasn't cooperating when I was drawing it... That's more likely.
These sketches remind me of a friend of mine, whom I've known since I was 5 or 6. :)
*Turns out I did date them, I just cropped out the date. These were drawn on September 9, 2010.