If you ever wonder what we did before we became obsessed with our phones, just look back on the Nintendo days. It seemed like every kid in the '90s had their eyes glued to their Game Boy screen. These bad boys were first released in 1989 and enjoyed unprecedented success for more than a decade. After the original came the Game Boy Color and then Game Boy Advance.
If you're the owner of a still functioning original Game Boy you could rake in a whopping $1,500 for it (even more if it's still in the box). If you have a limited edition, such as the Game Boy Light, it could fetch even more than that. Game Boy Color can go for just as much as an original, depending on which color and generation you own.