Make Your Own Car Smartphone Holder\nWant to mount your smartphone in your car without paying for an overpriced plastic tray? Here's how to do it with a paper cup. Start by putting the cup in your car\u2019s cup holder to determine just how high up you'll need to cut. Mark a line that indicates where the bottom of your phone will rest.\nMark the CupDraw lines to mark the cup at the four cardinal compass points. Then, starting at one of those points, move your pen up to about a half-inch from the top of the cup, and draw lines to the two closest compass points from the one you\u2019re using. At each of those two compass points, draw a notch approximately the width of your phone.Cut the Cup\nCut on the black line to create the back of the "chair" for your phone to sit in. You'll get a better look of how it fits in the next slide.\nBird's-Eye ViewThis is how the phone is supposed to rest in the cup.The Finishing Touches\nTo finish your phone's throne, cut horizontally between the two notches. Feel free to cut less at first, and then trim down until you can get the perfect fit (as shown in the next slide).\nYour New Phone ThroneYou're done--now you have your very own Phone Throne. Don't forget to check out the rest of our DIY tech accessories for more quick how-tos.