ThinkGeek - Free T-Shirt On $31+ Orders
Note that shipping is usually a killer with thinkgeek, usually costing the same amount as the items in your basket!
1. Choose your size from the dropdown above and click "Buy Now".
2. Add at least $31 worth of additional products to your cart. (Not including tax or shipping.) The t-shirt price should appear as $0.00.
3. Check out.
4. Bask in your brilliance and cleverosity. And also a free shirt!