Anyway, a few short reviews, below the break.
How the Foundation Ruined Nightmare Night, by Drefsab
Zero-ish spoiler summary: Five years after her return, Princess Luna has fully embraced Nightmare Night. And for the upcoming one, she's got a few simple requests for her research team. Requests that really oughtn't threaten the safety of the town of Bridle Falls, but sometimes research doesn't go in quite the direction you expect.
A few thoughts: One more Halloween-ish fic before we move on! This one has a pleasantly silly tone to it; despite a premise that could easily feel too dark, Drefsab keeps this firmly in an "amusing comedy" tone throughout, and that consistency makes the story much easier to enjoy than a less uniform tone would have. However, the Foundation itself feels like a missed opportunity; there's hints of SCP, MIB, and probably some other acronyms as well, but a lot of basic things about it are left totally ambiguous. Is the Foundation secret, and if so, how secret? Is it actually under Princess Luna's control, or is doing her Nightmare Night stuff a minor side-project? Just what is their purpose, anyway? An event-based story like this doesn't need to go too in-depth with its explanations, but I found I didn't have enough to even visualize what the Foundation was supposed to be. The story doesn't feel terribly "pony," either, at least in its construction; a lot of the voicing (frequent, albeit mild, swearing) and tech would feel more at home in a different setting. That said, the tone is very much in keeping with Equestria.
Recommendation: Readers looking for something silly and light, and who don't mind a rather vague setting, might want to check this out (or, if they insist on keeping their reading "seasonal," at least add it to their reading list for next year).
Daring Do and the Tiny Tornado, by Metool Bard
Zero-ish spoiler summary: Daring Do, in search of a bit of relaxation between adventures, goes to see the start of the breezie migration with her assistant--and, to her surprise, Fluttershy. Unfortunately, Ahuizotal may still be licking his wounds from his latest defeat, but hell hath no fury like a mother scorned...
A few thoughts: This story tries to set up as the prequel to a lot of episodes, introducing Fluttershy's interest in breezies, her friendship with Tree Hugger, and more. Most of these fit well enough, but they largely feel unnecessary; like extra flourishes which "explain" things from the show which already made perfect sense. The voicing, especially for Fluttershy, is a little questionable as well (I can't imagine her leading into a fact about breezies with a 'Get this...'" for example). All of the characters are used to good effect, however, including the original ones; Ahuizotal's mom is a consistently entertaining doting babbler, the two breezies whom the group befriend play their single joke over and over to great effect, and so on. And I'd be remiss not to mention that this fic gives Daring Do a pet tarantula who scouts around for her, and it's the best thing ever. Seriously, what's not great about an investigatory pet tarantula? Nothing, that's what.
Recommendation: Give this a shot if you're interested in a fairly straightforward, by-the-books adventure which redeems itself with a lot of good character-based humor and solid characterization.
Words Unspoken, by wille179
Zero-ish spoiler summary: A series of brief scenes, showing the death (some of them canon-comparable, some episode-rewriting, some completely off-the-wall) of various characters.
A few thoughts: Each micro-chapter (most of them are under 200 words) consists of two elements: the character's last words, including who says them to whom, and a short scene showing the death. As the profusion of tags might suggest, these stories run the gamut from borderline crackfic to dramatic to downright dark. Interestingly, the author starts with several of its sillier entries, but regardless, this is best viewed as a set of concept pieces rather than a "story," per se.
Recommendation: If the idea of "last words in a variety of styles" appeals to you, this is certainly worth a look. It's probably not one for bingeing on, though; despite the wide range of tones, I don't know that I'd want to read all sixty-odd chapters in one sitting (even if the total is only about 12k words). That said, if you decide to give this a try, make sure you make it to/skip to the last chapter; "Fireball" might be my favorite scenelette.