Added the Great Tankery Operation tag since Chiyo's attire and pose makes reference to it (twitter #1325817924204945409). The same holds true for most of the characters in the parent post, however the others in this post are way not into it and so aren't making the proper poses, and in the case of Arisu not having her teddy bear (see GuP Wikia: Great Tankery Operation Costumes).
Bring it, we'll take what you've got.We won't lie down for that.