ThinkGeek offers this Star Wars Storm Trooper Backpack for $47.99 plus extra shipping after 20% off coupon code: SPIRIT (Exp. 06/11). Sales tax where applicable.

Why this deal is hot:
You save 20% off the retail price. This is the best deal found on this item. This backpack is great for any Star Wars fan!

What this does and why you need it:
This Star Wars Storm Trooper Backpack is made of a mix of polyester, PVC, and nylon; dimensions are 18" x 11.5"; one tiny side pocket, two small front pockets, one medium front pocket, and one large internal storage compartment.