Today, I'm wearing my Castaway Cay 5K t-shirt, my daughter is wearing her PASSHOLDER t-shirt, and my wife is wearing a Flower and Garden t-shirt with Minnie on it. And we're making a recipe from the Food and Wine cookbook for dinner. It's a Disney day at our house!
You might want to look at the DIS boards Creative designs area for shirt ideas. They have some really nice art that can be personalized. We used them and made our own shirts a few years ago. Bought the shirts at Michaels for $5, Iron on paper for $10 5 sheets. Came out really nice. See link.