Tree of Harmony gives a box?

Meanwhile in Ponyville

Button and Canoe knocked on the library door and were admitted by Spike.

“Twilight is not here, now, so let me get out my stash of comic books”

“We’re surprised she lets you keep so many”

“Yeah, she lightened up since I promised not to get any more books from the Enchanted Comic Book Store in Canterlot”

Button started into the stack Spike had brought out and Canoe was about to join in when he spotted a poster on the wall. Spike notice Canoe staring.

“That’s a diagram of the box, Twilight got as a gift from the tree of Harmony.”

Button took notice as well.

“What’s the tree of Harmony?”

“It’s a tree in the Everfree forest where the elements of Harmony come from”

“So this tree gave Twilight a box?”

“Yeah, Twilight has been doing all sorts of research, probing for the keys to the box”

“Excuse me Spike” said Canoe “don’t apples come from apple trees”

“Of course they do” piped in Button

“And what is inside an apple?”

“Sweet juicy fruit”

“And what else?”

“Seeds?”

“Elementary, my dear Button, this box isn’t a box; it is the fruit of the tree of Harmony, and inside is a seed”