I bet most of yall will be stumped.

Absolutely nothing

There’s SOMETHING in the box. It isn’t nothing.

Human teeth

Nope.

Beer.

I’m not 21. I’m 15.

Damn.
Root beer.

The space in the box hypothetically can hold a can of it, but it isn’t what’s inside (though I really like root beer and I need to restock my mini fridge with some).

How big is the box?

Here’s the box compared to one of my Bachi sticks.

Small box.

Cardboard

Someone already got the answer, it was Steven Universe trading cards.

Such a shock I became
P I N K

Cards of some sort?

Yes.

The experience of my mother showing me her box of MTG cards has enlightened me >=D

The kind of cards aren’t what you’d expect.

They are scene and character cards from an animated show.

Steven universe trading cards?

CORRECT!

Damn I just threw that out as a random guess.still cool I got it right.

Yup!

I’ve got the regular scene and character cards from the show! The entire collection of scene, record, and character cards, but no pink star cards, chase cards, art cards, or autographed cards were included.

within the box is the exact thing inside. no other thing could it be -- it MUST be the thing inside. technically this is absolutely correct