I will usually bound a day or two when I'm in the parks.
A few years ago, I bought some mermaid leggings (not the shiny green ones, just a white with teal scales print), so I throw on a purple shirt and --ta da-- I'm Ariel! Bonus points: Holy cow, the leggings are super soft and super stretchy, so it's like wearing jammies all day long!
I also bought a Haunted Mansion "wallpaper bound" dress that I *must* wear every trip. Sadly, I expected more people to notice/comment on it, but they don't. Like, even around the Haunted Mansion, I may only hear 1-2 people commenting on it each day. Oh well, I still love it!