This story is a sequel to Celestia's Tiny Student

(Title changed from "Ponyville's Tiny Librarian" for reason pointed in this blog )

Twilight Sparkle is a one-kilogram pony the size of a large rat, shrunken by Princess Celestia following her entrance exam to the Celestia’s School for Gifted Unicorns to ensure that her power surges would not pose a danger to the ponies around her.

She’s spent thirteen years full of hard training at her new size, facing the life-threatening experiences that came with living in a world of giants. To survive those thirteen years of hardship and joy, of learning and adventure, and of pride and humility, Twilight has challenged herself to be stronger, to overcome any obstacle.

Now that tiny Twilight is on her way to Ponyville to oversee the preparations for the Summer Sun Celebration, how well will this miniature mare fare outside of the confines of the castle? How will the other Element Bearers react to her? How will Nightmare Moon react to the tiny unicorn? Is Twiny prepared to face Ponyville, and, more importantly, is Ponyville prepared to face her?

Credits:
Art cover - kc day

Top editors: (editing and rewritting for months, hope quality is to your liking).
Kydois
Georg

Nightmare Moon's sentences editor:
Bahatumay

Applejack accent editor:
Crimson Star (Chapter 1 - Applejack)
Rebel Brony
The Notebook is grounded

Pinkie sentence's editor:
Plump it UP

Other editors:
Hereward
tana1100
Lab (small editing from prologue to chapter 4)

Pre-reader:
Rated Ponystar

To celebrate the release of this sequel, I created a group called “Twinyverse” for all fans of this story where you can talk about it and track all side stories with ease.
The Twinyverse Group

Trees shorter than they should be, buildings smaller than preferred, a world filled with creatures bigger than him, yet others are near microscopic from his perspective.

Trying to find out where he should fit in is hard, because he is not too small, but most definitely bigger than most. Once he connects to the dominant civilization, a whole new world of opportunities is revealed before him.

He will walk as a giant. He will walk with giants. He will walk alone.

Edited by Newbiedoodle, CheesewedgeFTW, Immortan Joe, and Silas

This story is a sequel to The Best Nightmare Of My Life

Jeanne Tempest Jones, or Tempest to her friends, leads a rather ordinary life. At least for a teenager. However, one night everything changes. She wakes up in a mysterious land in a strange body, one that is feared and hated by the locals. Meanwhile, her boyfriend, Brian, and his twin sister Brianna find themselves along for the ride halfway across Equestria. Under the tender care of the Thestral (Bat Ponies) community, they will have their own challenges to face.

Now faced with numerous troubles, the largest being that no one seems to trust her, just how exactly will Tempest and her two friends reunite and find their way home?

Marked as a sequel to The Best Nightmare of my Life, as the concept being further explored is the one that sparked the Halloween One-shot. This is less comedy-oriented and more serious as to the topic of "Human looking like a villain" though.

(Title is once more a twist on the song "The Best Day of my Life")

The Elements of Harmony. Six artifacts of legendary power that have provided for the peace of Equestria for over a thousand years. While Queen Chrysalis managed to deny the ponies their ultimate defense, she still lost to a different unexpected surprise in the form of a love-powered shield spell.

However, the Elements won't be so easily denied. Unbeknownst to anyone, they awaken in their vault and cast Chrysalis into another world to teach her a lesson or six about life and harmony.

Stripped of her power, trapped in a form unfamiliar even to a changeling, and at the mercy of the locals, Chrysalis must learn how to get along with others before she is allowed to return to save her hive. And if successful, she may just be allowed to keep her new friend... If he's willing, and if he can survive the drawbacks of being one of the rarest changeling classes ever seen:

A breeding drone.

Join a spoiled rotten queen and a workaholic electrical engineer in the retelling of an adventure that brought them together across the boundaries of space and time. Because sometimes, a little change isn't all that bad.

(Changeling Drone 'Gazer' design artwork courtesy of oFimFiction.net member 'More Dakka')

Spike wakes up one day feeling like a winner. To test his newfound winning abilities, he challenges Rainbow Dash and Applejack to a simple little game of Truth or Dare. What ensues will change the lives of the three forever.

Author's note: Spike's a boss.

Cheerilee catches a massive cold and won't be able to teach class for a while. She calls in for a substitute, but ends up getting an eccentric creature named Miss Frizzle with her even stranger contraption. She can only hope that this new "teacher" can teach without causing mayhem.

Story idea based off this comic

Sometimes, ponies just wake up feeling like a brand new pony. Sometimes, they actually do. A certain lavender unicorn seems to be having this problem a lot.

Princess Celestia tires of constantly being surrounded by decorum, deference, and formality, and decides to take a day off from being Princess. But visiting Ponyville incognito is harder than she expects. Will she be able to fit in and make friends without blowing her cover?

Featured on Equestria Daily.
Review by PaulAsaran

An Evil Lord learns of a forbidden spell that will destroy the world. Naturally, he intends to cast it.

No problem! Princesses Celestia and Luna will just send Twilight Sparkle to go stop him. That usually does the trick. There's only one catch:

There are only thirty seconds left to stop him before the spell is completed.

Inspired by Half Minute Hero

Fluttershy moonlights as a masked pianist at a local nightclub to pay a few extra vet bills. Known only to the patrons as the beautiful and mysterious "Piano Mare", they lavish her with love and coin each time she comes. But one night Big Macintosh and Rainbow Dash are in the club at the bar, and they spot her. Will they see through the flimsy ribbon mask? (Song Fic based around Billy Joel's "Piano Man", Rated T for implied filly-fooling)