You're probably aware that the surface of your iPhone responds to fingers, but not pens, because of the capacitors that are built into the layered screen. Other than a few inconvenientworkarounds, it was thought that few options outside of expensive styluses were available, until a man named Norihide Nishi figured out that the cheap, sturdy, and organic king oyster mushroom did the job just fine. Nishi's photo of the mushroom stylus in action was retweeted more than 8,000 times, which of course inspired other users to see what worked. And hey, look at that all sorts of other veggies have the natural capacitance to operate the iPhone's screen. You may now use baby carrots to get through Temple Run 2.