Notes: Takes place after the events in "On Your Marks."

When Apple Bloom has trouble finding other interests to pursue, she seeks help and advice from Zecora.

[Please be gentle! This just occurred to me as a possible idea, which so far has only been hinted at in the show].

Following the Tirek incident, Equestria is once more at peace and festivities abound by ponies grateful for their freedom. Princess Twilight Sparkle and her friends have perhaps the greatest deal to celebrate, especially with the key-bearers who helped them to access Rainbow Power.

So Twilight decides to spend quality time with Discord—lord of chaos and final key-giver—investigating the Tree of Harmony, and the two friends must learn to work together towards a common goal while coming to trust each other. But friendship is not always easy, and when a struggling Discord receives a visit from a shadow that claims to be Tirek and threatens to destroy the mane six out of revenge, it tests their newly forged bonds and reveals many ancient secrets along the way.

[Note: Takes place after the events in "Tanks for the Memories" and before "Slice of Life."]
[Note: Updated as of 9/4/17]
[Now featured on Equestria Daily: https://www.equestriadaily.com/2017/09/story-winter-wisdom.html]

The winter weather doesn't agree with Cranky, and this year it came much too quickly for him. Then the love of his life, Matilda, makes him promise to give the winter a chance. Cranky will do anything for Matilda, and what he discovers may just surprise him.

This story is a sequel to Tirek's Shadow

Ponyville is set to host the Equestria Pet Show, causing Spike to miss Pee Wee (his brief phoenix pet). However, when the baby dragon comes across a young timberwolf it's love at first sight that brings unexpected challenges. Now he has to convince Twilight he can take care of this rambunctious creature while preparing for their first pet show appearance!

This story is a sequel to Spike's Pet

Exiled Diamond Dogs (Rover, Fido, and Spot) discover and try to steal the Elements from the Tree of Harmony so they can return to the Kingdom of Dimondia. That is, unless a certain draconequus has anything to do with it.

Note: You should also be able to follow this story well even if you've only read "Tirek's Shadow."