Today only you can get a $50 Cafe Press certificate for only $25 at Groupon. If you’ve never checked out Cafe Press, you’ve got to take a look. I bought two Cafe Press T-shirts as gifts over the holidays (one Pi shirt and the other a Battlestar Galactica referencing shirt) and I would do it again in a heartbeat. They have some very fun and hip logos, sayings and designs available, several of which have actually made me laugh out loud. Shipping is included in the certificate and there is a limit of one per order.