Pokémon Trading Cards
Now, we are not saying that you cannot make a small fortune from selling Pokémon trading cards, but you would need to be in possession of mint condition and very rare first edition cards from the early 2000s. Otherwise, your colorful cards from later years will not be worth much. Pokémon trading cards are still widely available and their resale value is only significant when you have something like a mint-condition, first edition Charizard still in its case.
Pokemon Trading Cards
Older Newspapers
Here is another great way of learning more about history. Old newspapers are fantastic ways to get first-hand sources for periods of interest, such as World War I or the Cuban Missile Crisis. Some people believe that if they hoarded enough old newspapers that they would be able to entice collectors and museums. Sadly for them, most old newspapers can be easily found in digital form online, and you can learn anything that you need with a few clicks.
Older Newspapers
