I have a Super Mario Sunshine towel somewhere.
I still have a Zelda (original) towel around, though of course it's quite a bit faded now. Don't have too many game shirts, my g/f bought me a New Super Mario Bros shirt for Christmas. She is the one that usually wears geeky t-shirts, I'll stick to edm-related (record label, concert, dj) shirts. Gonna rock this shirt out when it finally gets warm:
Don't really have a problem wearing game related t-shirts, I'm past the stage in my life where I worry about wtf other people think of how I'm dressed.