Wordboner gives you a chance to wear your tumblr. All you need to do is to grab a fabric marker and put the name of your tumblr in the dedicated spot. Obviously the design looks best on a navy fabric but who am I to tell you what color looks best on you? More color options are available, as always. And for the picky ones, there are also alternate, black versions available (here). Shop away!
The sweat shirt seems pretty cool though!