Monthly Tee Club offer a subscription service for T-shirts (and Hoodies) - and they have different subscription options available. You are able to select your categories that you are interested in so that you will get a T-shirt that is suited to your areas of interest. There's no contract, you are able to cancel anytime. They often run generous introductory offers, and you get a free T-shrt if you refer a friend. The T-shirt's are good quality and the designs are great.