First up is Christy Cole Rescue jewelry on Etsy. She donates 100% of the profits to dog rescue. She has Doberman themed stuff! Other breeds too. And the prices are reasonable, not something you see every time.
(picture from Christy Cole Rescue Etsy store)
Less "classy", but for a great cause is t-shirts through Dreaming of Better Endings Doberman Rescue, inc.
(picture from Dober,inc. Facebook)
Every purchase from the Animal Rescue Site (on the Greater Good network), funds food and care for animal rescue.
Right now, the Doberman Assistance Network has 2014 calendars available on their web site (through PayPal).
And last but not least, Special Needs Dobermans has an ebay auction for a Doberman quilt that ends on Friday.
(photo from ebay auction)