I like Cafepress because they will print you anything you want and the turn-around time is very fast. Their prices could be a bit cheaper, but considering that most brick-and-mortar screen-printing places have additional set-up fees — with Cafepress they are included — they are still very reasonably priced.
Like Mike Rowe from Dirty Jobs I’m a big fan of baseball caps. Not only are they practical, providing shade for your eyes; but you don’t ever have to worry about how your hair looks. Until you take off your cap of course hahaha!
Anyhow, I decided to custom-order a bibliophile cap from Cafepress and this is what I came up with!