True, it might be too vague, but we're just throwing around ideas so I thought the more suggestions the better. I'd be disappointed if there wasn't a cunning hat.
Fezzes might be a fun vanity item. Terraria references Doctor Who already, so this might be a nice addition. Fedoras reminded me of Fezzes (Team Fortress 2 spies wear both hats.)
It may not be an actual "vanity" item, but damnit I want a Transparent Orange Chainsaw! Barring that, I'd settle for a red feathered fedora or a steepled Black Mage hat.
Goggles Labcoat Absurdly long scarf (Think the 4th Doctor) Geordi's Visor Robotic legs/arms Some kind of hoodie Headphones Thats all. And maybe a "Rainbow Dash"-wig?
I think it would be cool if you could get like some sort of Metroid Prime type armor, like the fushion suit or the prime suit (which would be especially badass)
Waldo clothing? Perhaps wearing the full set would make you semi transparent as a pun towards his nature. And of course if you have Waldo you must have Carmen Sandiago.
A certain wavy-haired handyman-samurai's (who happens to get alot of odd jobs) garb. (if you get this, I love you)
Hah. I can see the description now. "Loose yourself in these iconic striped shirt and hat." I myself would like to see some steam punk vanity items, such as metal wings. Of course, they wouldn't work. On their own. Combine them with a jetpack, however.... As a fan of Team Fortress 2, I'd like a vanity item that is a stage show hat on top of a top hat, on top of a bowler hat. Preferably on fire.