Retro Mini Handheld NES System
Sure, there are plenty of ways to play NES games on the go, but most of them don't take actual cartridges. The Retro Mini Handheld NES System ($50) is like the Game Boy that never was, with a 2.4-inch LCD screen, a top-loading slot for NES titles, AV output, built-in speakers, a headphone jack, and the ability to run up to eight hours on 4 AA's.