101 things in your attic that could be worth a lot of money

192. Original Tamagotchi

Manufacturer: Bandai
Original Price: $18*
Current value: $2,250*

For just $18, you could buy a Tamagotchi in the late 1990s, but the price of these first-generation, early-release Tamagotchis has risen ever since. The original 1996 Tamagotchis, which were released in Japan, have sold for over $2,000 on auctions on eBay and other auction sites.

The Tamagotchi was released in the United States in 1997. It quickly became a huge toy craze in the 1990s and early 2000s. More than 82 million Tamagotchis have been sold. These digital pets still come in the same egg shape, with three buttons, that they came in decades ago. Tamagotchi creators even won the Nobel Prize in 1997 for their unique invention.