Monopoly
If you own any vintage monopoly boards, you might be sitting on a few hundred bucks. The original hand-drawn version of this iconic board game sold for $146,500 in 2011. This popular game has been translated into 1,144 versions since its inception in 1935.
Game Boy
Compared to the Game Boy, today's handheld gaming systems are much more graphically advanced, but that doesn't mean they embody the same childhood nostalgia. If you find a spare console buried in the attic, don't toss it in the trash. Special editions of the Game Boy, like the Game Boy Light, can sell for over $1,500.