Furby
Only once you become an adult can you understand the true value of a Furby in an unopened box. As a kid, you would never have imagined leaving this toy unopened, heck you wanted to play with it and show it off to your friends! Had you kept it closed in its original packaging, you could have seen $900 coming your way for it.
Talkboy
It was all thanks to Home Alone 2 that we all scrambled to get our hands on a Talkboy! It was a super-stylish tape recorder that could slow down or speed up your speech. Today you could sell yours for more than $200!