Amazon have left a large thing, what do I do?

[AHobbyaweek]

So we had some ok a lot of cat food delivered as it was on a brilliant deal for Black Friday. Delivery driver rings the bell yesterday and I let him in. We are up one flight of stairs.
I pop out of the door to see him walking along dragging this big blue box. He puts it outside the door and runs off, thought he was coming back so get the boxes out and take them inside.
Come out this morning and the box is still there so bring it in.
What do I do with it?!?!
Can't leave it in the hallway as it is against all sort of rules.

Fold it up, email Amazon.

Use it as a laundry hamper?

I'm confused - does the box contain your cat food or is it just an empty box? Or does it have something else in it?

Looks to me like the sort of box a cat might like to play in if it was turned on it's side.

Cats and DD are already in said box.
It did have my cat food in and I took it out. Then thought the delivery driver was coming back up the stairs to get it but he ran away.

oooh I'll have it if you don't want it.

It is now a play house apparently!