Amazon Local has a free voucher for a Starbucks Refresher when you buy one, you get one free. You can find this deal here: http://local.amazon.com/national/B00F53GMNQ and the voucher is good through September 19, 2013. I am not sure how long the Amazon Local deal will be available, so I would grab yours today!
There is a new educational web site for deals launching tomorrow called Educents. If you sign-up before the launch on April 2nd, you will receive an e-gift card worth $10 that you can use on the site! This will be a daily deal site featuring the latest educational products at 30-90% off (including ebooks, software, curriculum, online learning, and more)! Just sign-up here: http://educents.com/?source=nuxcledv before April 2 to receive your free $10 e-gift card!