Are you a pony who travels?
Do you need to communicate on the go?
And do you totally lack any and all dragons in your life?
Then you need -- Slate!
Everypony does!
Unless they can think.
Which just might leave Trixie out.
(Part of the Triptych Continuum, which has its own TVTropes page and FIMFiction group. New members and trope edits welcome.)
Now with author Patreon and Ko-Fi pages.