15 money-making items you didn't even know you had in your attic

One man's trash is another man's treasure, and what's lying upstairs in one man's attic could be exactly what another has been trying to find for years.

The millennial generation is big on all things vintage, and it's no surprise that trends (and even specific items) from decades past are coming back into style full-force.

Of course, there are the obvious items that consistently gain value as time progresses. But there are others that you may not even realize can turn a big profit.

Chances are you have at least one of the 15 money-makers on this list in your attic:

If you're willing to suspend the nostalgic value, you can make some serious cash off of these items.

Now, check out just exactly how much some of those old attic toys are worth:

More on AOL.com:
What your old Barbies are worth now
13 things you should accomplish with your money before turning 30
What to buy (and not to buy) in April