Looking for a Halloween costume that attracts attention without breaking the bank? Mark Rober's Digitaldudz offers unique t-shirt designs that require little more than duct tape and a smartphone for a DIY costume. The process is simple: download the free app for your iPhone or Android device, purchase a custom-designed tee from Digitaldudz, then duct-tape your phone to the inside of the tee. That's it. The app features options including shifty animated eyes, a beating heart, twirling disco ball and plenty more. The "iWound" and "Safety Pinned" designs have to be seen in action to fully appreciate their creepiness, so press play on the video overview below.