Here's a couple of options I found. Use what you already have and scour thrift stores for what you don't.
Mal Reynolds from Firefly: Tan pants, black boots, red/brown button shirt, suspenders, toy gun or holster optional.
Ginko from Mushishi: White button shirt, brown pants, boots, cigarette.
Luffy from One Piece: Jean shorts, red vest, sandals, straw hat (try Hobby Lobby or the Hawaiian/luau section of your nearest party store for the hat).
Sanji from One Piece: Black suit, black tie, black shoes, blue shirt, cigarette.
Mario or Luigi: Come on do I even need to write a clothing list.
Finn from Adventure Time: Blue shorts, blue shirt, black shoes, green backpack, bunny hat (you can find patterns and tutorials for making that online).
Dr. House: Pretty much nice clothes and a cane. Walk with a limp.
Barney Stintson: Suit and a nice smile. Hit on anything with breasts.
Also here's this site. Just plug in some of your information at the top and it'll bring up a list of characters based on what you tell it.
I don't know what's real from the noise, the noise.
I can't hear a thing for the noise, the noise.
I wouldn't do anything, the thunder that throws me away.
I wouldn't do anything, there's something that keeps me away.
I wouldn't do anything, something that begs me to stay.
I wouldn't do anything, something that throws me away.