Masters of the Universe Eternia Playset
He-Man and Skeletor duke it out in this playset depicting Eternia, the planet on which Masters of the Universe is set. A playset in pristine condition can go for $1,900. By the power of Grayskull...
Legos
These plastic construction toys have seen all sorts of adaptations, including The Lego Movie and all subsequent sequels and spinoffs. Some Lego sets have increased by 12% in value since 2000. By comparison, the price of gold has only increased 4.1%. Recent reports have found that the Star Wars Lego sets are the most valuable; a First Edition Millennium Falcon is worth $4,000.