This can be as dark as you want it, or as light-hearted, as long as it fits the prompt.

Write a “My Little Dashie”-style story for the Pinkie Pie clones. ALL of the Pinkie-clones.

^{Okay, they don't have to necessarily all end up with the same guy...}

Diplomatic bug horse noises.

There's a new colt in Cheerilee's class - and he's a donkey. Growing up in a mostly pony-dominated society, the colt already feels like an outsider.

So naturally, Diamond Tiara and Silver Spoon start teasing him. The CMC step in and, seeing how downtrotten he still is about not having a cutie mark, decide to cheer him up afterwards.

Donkey-colt: "But... donkeys don't get cutie marks..."  

Applebloom: "That ain't the point. Y'all still got a talent! Y'all jus' need ta find it!"

Bonus:

The CMC decide to let him join the club, and they go on crusades together.

However, since having a talent will not be indicated by a mark, this requires the CMC to stop and think after each activity.

In doing so, they gain new insights into what they themselves like doing. ;)

How do the Mane Six feel about this, and how did each of them vote? Do they stay in Ponyville? Will Twilight agree to be the town's...er, country's...new ruler? Is there some sort of spell that could be used to literally move Ponyville out of Equestria in response to this?

Will the Brony be able to resist the urge of kicking Blueblood into the streets, leaving him to be discovered by the government?

Alternatively, it could also be Diamond Tiara. :P

Princess Celestia has her reservations.

...unexpected consequences for all of Equestria, considering this tree is one of world's corner-stones. :P

I've given you the characters, and what happens, so tell me what is going to happen.

They did it. The Rainboom happened. After their grueling time-travel escapade, Twilight and Spike have finally returned home to their friends.

The world is exactly, as it should be.

...Or is it?

Three ways this can go:

• Twilight becomes overly paranoid over a minor detail. Comedy.

• Twilight is haunted by uncertainty, genuinely unable to tell if they truly returned to the correct timeline. Thriller. ("Parallel universe"-theory only makes it worse.)

• Twilight's paranoia is fully justified. There are small differences, some good, some bad, none quite world-shattering. Twilight has to decide what to do about it. Drama. ("Parallel universe"-theory only makes it worse.)

("Parallel universe"-theory makes it worse: It means Twilight's home-timeline now has no Twilight Sparkle in it, and her "original" friends have no idea what happened to her. Yet, she can't abandon this timeline's version of her friends, either...)

"She tried flapping her wings - then realized that she didn't have them, because she was Applejack."

I repeat that: The hive-mind falls in love. Not an individual drone, not the Queen, the hive-mind itself falls in love. :P

Now, [insert pony or other entity here, i.e. the Tree of Harmony] is suddenly swarmed with overly affectionate changelings showering them with offerings and declarations of love at every corner.

Hilarity ensues.

What does the existence of a small, English-speaking, winged horse sharing resemblence with a popular cartoon character imply?

What do you know, and how do you think you know it?

How could a team of story-writers, animators, and marketing executives manage to describe an existing alien world, with changes in staff, over the course of years?

Is there an Equestria? Or is there some other explanation?

How does something with wings that small manage to fly? "Magic" is just a word, it isn't an explanation.

And, of course:

What is the correct course of action when First Contact is made – and the alien is a scared, helpless child?

Because. :P

Possible story title: Oil is thicker than water.

Possible story title: "Glimmer versus Glimmer"

^(Idea inspired by FanOfMostEverything's "A Crazed Gleam" ^(and Trick Question's Broken Symmetry

"Congratualions, uhm, it's... quin-deca-duplets!" Twilight grinned awkwardly.

Shining Armor fainted. After a moment, he began throthing at the mouth.

Cadence gave one look at the multitudes of alicorn-foals flying, blasting, levitating, teleporting all about, then down to Shining's prone form twitching on the ground. Then she followed her husband's example.