Old Polaroid Cameras ($500)

These days, even our phones snap high-quality photos, and people document their lives more than ever before. But for photography enthusiasts, nothing beats a legit physical photograph. That’s why Polaroid cameras have made a comeback — with companies producing instant film again for the first time in forever.

But it’s the vintage Polaroid cameras that are really bringing in some serious cash. If you’ve hung on to one of these through the years, you might have more than a few hundred dollars sitting on your shelf.