I apologize for my overlong hiatus. Thanksgiving and rearranging my schedule around a new job, plus reinstalling Windows and Ubuntu on the laptop I use at home interrupted my post-a-snowclone-on-Friday habit.
The origin of this snowclone is unknown. [Of course, I welcome any dates on this usage!]
“Whatever floats your boat” is commonly attested, with ~46,000 Google hits, and an entry in the Urban Dictionary, and several seem to have an obligatory “floats”, while the Y is quite flexible as gloat, ornaments, emf, cephalopod, rocketship.
X needs to be a verb, and Y is the item to be Xed, and there is usually some kind of whimsical relationship between X and Y, or the phrasing has an offbeat quality. X and Y may rhyme as in “floats your boat” or alliterate as in “fluffs your flannel”, or Y is not something that naturally follows X in reference to “you”, as in “tweaks your udders.” Thus, “whatever tickles your fancy” does not satisfy this snowclone’s requirements, even though it means the same thing–it is more of a cliche in its own right.
Some other examples found via snowclone.pl:
whatever roxxx your soxxx
whatever jiggles your jello
whatever bangs your shutters [as seen on “Unblogged Snowclones“]
whatever marinaras your molinaro
whatever tickles your tastebuds
whatever blows your hair back