Pretty much everyone has dabbled in collecting at one point or another. The nice thing about collections is they can be big or small, cheap or expensive. You can collect almost anything, and the following pics prove it.
Around the world.

You’re looking at a collection of banknotes from every country in the world. I wonder what the value of all this is in U.S. dollars.
Special editions.

This isn’t just a collection of Doritos, it’s a collection of limited edition Age of Ultron Doritos. Hopefully this person’s friends don’t inadvertantly open a bag.
Well stocked.

It looks like a well-stocked pantry shelf, but if you look closely you’ll see that everything here is a jar of peanut butter. This person collects peanut butter from all around the world.
Intel inside.

Those little Intel stickers you find on computers are aesthetically satisfying, but it had never occurred to me until now to collect them.
Classic collection.

Matchbooks aren’t as common as they once were, but they still make for an excellent collectible. Here’s an old-school matchbook collection.
The freshmaker.

This colorful array has to represent every kind of Mentos known to humanity. Now I can’t stop myself from humming the Mentos jingle.
Behind the curtain.

Like many countries, North Korea produces its own commemorative keepsakes. Here’s one person’s collection of North Korean collectible coins.
Perfect gradient.

This isn’t just a Hot Wheels collection, it’s a Hot Wheels collection with an incredibly satisfying color gradient from dark to light.
Documenting history.

Collecting newspapers is tricky because the newsprint doesn’t tend to age well, but it’s still possible. Here’s an ongoing collection commemorating history-making American events.
A trip around the world.

Each of these vials is full of sand from a beach somewhere in the world. I love the idea of documenting the beaches you’ve visited in this way.
Frequent travelers can relate.

This is an intentional collection of hotel keycards, but anyone who travels for work has probably accumulated something like this unintentionally.
Every last one.

This person has a well-curated, and immaculately displayed, collection of every shield ever produced by the good people at Lego.
Must be a grandparent.

I don’t know if spoon collecting will ever coming back. Until that day, the best spoon collections reside in the homes of grandparents everywhere.
This rocks.

This is an impressive rock collection, made all the more impressive by the fact that the collector is only nine years old.
Don’t take any of these.

I love the labels of old medical tonics, and evidently this person does as well. Just don’t take them, because they probably contained, like, literal poison.
All stars.

Anyone who’s seen all of these concerts can safely say they’ve seen some of the biggest acts of the latter half of the 20th century.
Clippers for days.

Bics are alright, but everyone knows that the best lighters, when you can find them, are Clippers. Here’s one impressive Clipper collection.
Literally radioactive.

If you’re wondering why this glassware is glowing, it’s because it’s infused with uranium. They don’t make this stuff anymore.
Seashells by the sea shore.

The person who posted this says they found all of these shells over a few years of living, sailing and spearfishing in Croatia.
View these View-Masters.

This person collected enough View-Masters, and View-Master accessories, to make a pretty nice curio cabinet.