Fondant is more for looks than flavor, as far as I know. Another option besides butter cream would be whipped cream frosting.
Flavors? Coconut and lemon are good together. Chocolate and cherry. Really, what could be bad? :)
Much like the gays have used the Greek letter Lambda I’ve always thought our secret symbol could be the Omega for 2 reasons. First, it’s round and has little feet. Looks like a chubby person! And second - it has the word “mega” in it.
Could be a subtle lapel pin.