(Collab with yodajax10 who suggested the idea. Slight spoilers for "Nightmare Knights".) When Twilight organizes a party to celebrate Luna's new task force, Spike's wings start acting up around Tempest. The reason for this will be quite a shock.
(Collab with yodajax10, takes place after "Father Knows Beast" for obvious reasons.) In the aftermath of the Sludge incident, Princess Luna intervenes to help Twilight and Spike cope with the after effects. Spike especially will need her help.
(Collab with yodajax10, takes place during and after "The Mean Six".) Spike stays behind when Twilight goes camping with her friends, a decision he soon regrets as the dragon finds himself all alone. But two special guests will change all that.
Late one winter afternoon, Rainbow Dash goes to visit her new marefriend Fluttershy. Yet when she arrives at the cottage she finds herself faced with a life time of treasured memories.
Twilight starts to viciously attack Rarity with snuggles one fine, seemingly-normal morning. Cuteness and an extremely confused Rarity marshmallow follows.
Applejack comes across a Pinkie duplicate hiding beneath her barn wreckage. But, somehow, this one is different than all the others. She calls herself Pinkamena. Takes place right after Too Many Pinkie Pies.
Twilight Sparkle is lonely. So lonely, in fact, that she spends many months devising a plan to get Rainbow Dash to snuggle with her in the hopes that doing something so intimate would let Rainbow see just how much she cares about her.
Everyone loves to be loved and loves to love. For Rainbow Dash, she gets to do this almost every night. But a change will have her question her feelings and maybe bring something new to her life.
Alone and afraid, Sunset Shimmer has been living off of the streets in Canterlot ever since she ran away from home. On a particularly cold night, she's out searching for something to eat when she bumps into the last pony she expects to see.