Tattoos do not fall into the "try before you buy" category of goods and services. They, for better or worse, forever — unless you're using the Prinker Temporary Tattoo Device. For around the cost of some decent work, the Prinker gives you multiple dry runs before the real thing or simply lets you go crazy with your own personal style. Upload your design onto the device, spray skin with the included skin primer, and then draw it across to print the tattoo in black ink. Each tattoo lasts up to two days and is removed with simple soap and water. The Prinker can print a tattoo up to 0.866 inches wide and 39 inches long.