Recently I've taken to just wear plain coloured t-shirts, I've got a few weird t-shirts like bison on bikes and moustaches for gentlemen but I haven't noticed any more or less success.
My only worry with things like this is appearing to try too hard to get a reaction but maybe I'm just looking too deep into this, if it's working then keep doing it.

One thing I get a lot of success with is my Chairman Mao hand waving watch that my sister bought me from China. Even though it's shit at telling the time, constantly wrong even after you set the time an hour later its wrong again.

I call this Communist time and last time I was out I started talking about decadent western capitalist time being wrong. I like it because it lets me express my random side, waffle about shit and create random worlds and personalities, i sometimes use it as a start point.