In this sketch from the Tech Museum, there were many different textures. I am most proud of the rendering of the clear plexiglass that embedded the plastic hip bone close to the base of this model.
This was the Arm Wrestling Booth at the Tech Museum;(it was removed since 2010). I am sure I used pencil in this one in order to render the spot lighting on the floor. I inked the letters in the signage. Finally, I used watercolor to represent the backgrounds of each exhibit.