Tell a story about boxes, and the roles they have played in your games.

I was once playing this campaign, and we were sneaking through a warehouse, so th DM gave us a stupid bonus to stealth if we used a cardboard box. So in my inventory was cardboard box +20 to stealth, and I started using it all over the place, and no one noticed the weird cardboard box running around...


oh, no wait...

that was the Metal gear games...my bad.

I once found a mysterious cardboard box. When you placed a thing inside, that thing would be hidden, magically so. Of course, I took the box of hiding with me when we left the area. Later I found something to hide in it (I don't recall what it was) and tried to remove the box from my inventory, only I couldn't.
Me- I pull the Box of Hiding out of my inventory.
GM- You can't.
Me- ...Why not?
GM- It seems to be hiding.
Me- [FACEPALM]

Eventually we found it and I broke it down for its magical properties ASAP. Got a vial of Essence of Hiding that we are STILL getting use out of.

Ork Kommandos often hide in cardboard boxes, amongst other things. About as effectively as Solid Snake, because they're Orks and think it'll work so their gestalt pychic field makes sure it does.

I also recall any number of stories about Strength checks to escape crates being made and failed, or succeeded at dangerously well (wood shrapnel can kill passers-by when the passers-by are level one commoners), but sadly not in anything resembling sufficient detail to storytime them.

A GM decided to cut down on paperwork by allowing each of us to purchase an "adventurer's backpack". Basically, if it cost less than 50 gold, was non-magical, and could fit in the backpack, it was assumed that we had it.

Fast forward to the point where cursed magical items started to come into play. After the first one, my go-to response anytime detect magic picked up anything was always use tongs to drop the item into a lead-lined wooden box, number it, then offload everything onto the local wizard so he could get cursed IDing everything. The fun part was, I was the thief, and the lead prevented my party members from picking up my stash with detect magic. I ended up with ridiculously more cash than everyone else, while they were left wondering why we found so little magic.

Truly, the most subtle of all possible actions.

This individual page has wrung more laughter out of me than months of material from dozens of webcomics. Kudos, DT.

TRIGGER WARNING : ADORABLE FLUFFY ANIMAL ABUSE

so my evil sorcerer, Issac the Black (Catfolk Starsoul Sorcerer with the Void Touched archetype), knew the party was going to the moon in our pathfinder game. He decided to invent a spell to temporarily grant the party his immunities to outer space. As a Lawful Mage and a scientist, he took a scientific approach to testing and creating the spell. This meant creating the spell, then testing it's effectiveness, duration and side effects next to a control, non enchanted test and repeating as necessary.
As an Evil teleportation sorcerer, it was only obvious to him that he needed living test subjects for the control and for the enchanting.
Issac proceeded to go out, buy a box of about two dozen puppies, sneak them into his library (past a gold dragon who was our boss, a paladin, and the rest of the party), and begin working behind locked doors.
He proceeded to enchant one puppy, then take two with him to space.
He kept doing this until he was satisfied with the spell- then continued, using the properly enchanted puppy as the new control (it's not science if you can't repeat the results).
The party didn't know what was going on, and had no choice but to listen on in horror as I teleported innocent puppies into space and watched them die.

In the end, the spell worked, and I kept the last puppy that I had successfully enchanted as a pet. I named him Science/lucky.
I never told the characters why :)

I gave my friends a magic item called the "Box of Infinite Boxes". basically, you keep pulling boxes out of a box. it really didnt serve any other purpose than to give them a magic item since they were complaining about not getting any. actually, they came up with some pretty nifty ideas with the boxes, including a camping "fort"., a weapon (they shot the boxes at enemies) and making stairs to ascend cliffs and such.

Did you learn not to give them [item] of infinite [items] after that? Or was it entertaining enough that you'll consider the idea in the future?

Also were they the same kind of box or different types of boxes?

We just got a stocking of infinite stockings in a (non-canon) derptastic Christmas game... Yeah, pretty exploitable.

I may have been playing way too much WoW but the I'm gonna punch him in the face reminded me of an old quest where you punched deathwing in the face. I don't know.
Yay Boxes! I don't really have any stories other than that right after I discovered Mimics existed I stuffed a ton of them into a game for a session before I was told to knock it off (and a tiny gembox mimic was sliced in half with no warning whatsoever).