Ever since an ad came to her cottage, revealing a new store that was opening up in Ponyville, Fluttershy has been counting the days by till the day it was open. It was a store that specialized specifically for selling toys for pets and animals. She was so excited by this news that she could burst. And when she learns that this store even had a Special offered that was guaranteed to bring a smile to their pet's faces, she really wanted to make sure that she got it.
Rainbow Dash had never seen Fluttershy so excited before. She decided to accompany Fluttershy on this trip to that very store when it first opened up. She owed Fluttershy that much since Fluttershy was the reason she had a pet at all.
Soon after their arrival, they find themselves becoming tiny living soft and squeaky plush toys, the perfect source of entertainment for pets of any kind. What happens next and what will they do now?
wow
That was...something, alright.
And the whole time, I was hoping they'd go full-inanimate!
Oh, and watch your use of capitals on every word, hmm?
~Dash The Stampede
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I was trying to express that they're talking progressively louder from the change of First Letter Caps to ALL CAPS. Does that not work?
But then they'd probably be trapped like that forever, and that would change the theme to Dark.
A lot of cute animals chewing and mangling toys...sounds like my dogs...at least their stuffing wasn't pulled out.
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It works, I guess, and I assumed that was your stance, but I've never seen it done that way. Another easy way is to use the italics for emphasis, instead of caps: "Hold on!" Dash cried out. <- Here, you can use descriptors to emphasize the volume, and Italics to show where the volume increases.
As for full inanimate, you don't have to make it dark! They could've been reverted to plain squeaky toys, trapped in a prison of rubber, or plush, able to see and feel, but unable to speak, their experience filled with wonderment at being a chew toy, and shock at having their (humanity) stripped from them. Then, the toymaker could be halted by one of their friends, as they discover the two had been missing for days, not hours as it seemed. They get reverted back to normal, and everyone looks back on it with humor. They could also develop a "love" for the feeling of being a toy.
I'unno. You're talking to the guy who turns ponies into balloons, so I'm slightly biased.
~Dash The Stampede
Loved it!
I have to wonder though, dont you think that they should tell Twilight about what happened just to make sure something like this doesnt happen again? 
4781986 If they don't mind about being embarrassed by such an event. Plus, they taught the toy maker a lesson themselves, so they're pretty sure it won't happen again.
4687763 Or a limb, like toy story 2
Woody: Aaaahhh! It's gone! I can't believe it! My arm is completely gone!
Stinky Pete the Prospector: All right. Come here. Come on. Let me see that. Oh, it's just a popped seam. Easily repaired! You should consider yourself lucky.
Woody: Lucky? Are you shrink-wrapped? I am missing my ARM!