UPERFECT Delta Pro Touch 16-Inch 2.5K Dual Monitor: Price and Availability ... to test desktops while running an extra Apple TV to the top screen to give me a mini TV in my office.

Here’s a bulky old CRT monitor used as a touch-screen without any alterations. It doesn’t use an overlay, but instead detects position using phototransistors in the fingertips of a glove.

Are you looking for a portable monitor? The LG StandbyME Go is one of the best ones, and right now you can save a whopping $500 on it.