Tattoos in prison are done one of two ways. First is the freehand method. Using India ink or ink derived from "soot created by burning plastic eating utensils mixed with shampoo and water, "the tattoo is applied using a needle or piece of sharp wire in small dots. These tattoos are noticeably crude and can often appear childish. More ambitious prison practitioners are able to attain very professional-looking results using tattoo machines made out of, for example, a Walkman motor, a hollowed out pen, a guitar string or wire from a lighter, and a battery. These bits of everyday junk can be put together to create tattoos that are the equal of many high-quality commercial efforts.