Nipple rings?
Fake FAM uniform?
35W soldering iron?
Big Gulp cup with "I am too Britney Spears!" written on the outside?

I'd suggest a suitable t-shirt but guess you've already thought of that.

I assume you're flying from Florida. If you get a patdown (and anyone reading this board knows a dozen ways to arrange that), wait until the appropriate moment and then say loudly, "No, I don't want to be your sex slave!" (Worth double points at MCO.)

But I like Flaflyer's idea better.