Portable televisions were big in the mid-80s and anyone who walked into RadioShack might remember stumbling upon the Pocketvision 3. A favorite amongst overnight security guards and Fortune 500 travelers, the 3-inch miniature TV utilized a bizarre projection system that consisted of natural light coming through the white plastic panel to reflect a reversed image onto a mirror. Extremely technical. Nonetheless, the device produced impressive B&W visuals and viewing angles, and offered 10 hours of playback through 4 AAA batteries. Remember those?