Today’s theme is “show a pony lost at sea or a pony drifting”. Ehh, a bit dark but the latter phrase hit me, and I turned to another fanfic I am in the process of writing, “The Gravity of the Situation”
http://www.fimfiction.net/story/92668/the-gravity-of-the-situation where (pre-S3) Twilight accidentally hits herself with a gravity nullification spell that she can’t cancel and refuses to ask Celestia for help for fear of letting her mentor down, but she still needs to get things done around town. Thus, throughout, Spike has to pull a drifting Twilight around Ponyville, much to her regret and the town’s enjoyment.