The historically significant American Civil War era Remington .44 Army Percussion Cap & Ball Revolver (circa 1860's). From my sketchbook: HB & 9B graphite pencil on 14cm x 14cm paper.
My sister-in-law called me on the phone while playing Giant Sandwich VS Princess Ballerina with my (then) 3-year-old niece, (who I assumed was the Princess Ballerina.) From what I could hear over the phone, my niece was using a "flying fist punch" to devastate the evil "Giant Sammich," (which was later described as a ham and swiss on white with flimsy leaves of lettuce.)
After that call, I imagined what that fight looked like and put it down on paper.