ThinkTankPhoto will give away free laptop accesories between November 1, 2007 and January 1, 2008 in the US.
More specificaly, this is about a AI Low Divider Set (normaly $49). To catch this opportunity you should first purchase an Airport International roller and then receive a coupon. You must present the coupon in order for ThinkTankPhoto to send the AI low divider set.

With the AI Low Divider Set, your laptop case (such as our Artificial Intelligence 15), Cable Management 50 case, or other vulnerable equipment is recessed within the safe confines of the roller. Not only does this offer you extra protection against damage, it decreases the number of carry on items from two to one, which could make a big difference when traveling internationally or on airlines that allow only one carry on item.

The Airport International roller was given a 2007 American Photo Editor’s Choice Award. They wrote: “[The Airport International] meets international carry-on regulations and features TSA-approved locks on the main compartment. An integrated wrapped-steel cable lets you lock it to something nonremovable in a press room or hotel — or to a tree. The supplied dividers can be swapped out for the low divider kit, which leaves enough space for most laptops inside the locked main compartment. A retractable handle, in-line wheels, and a subdued black-on-black design make the Airport International look much like a regular carry-on bag — but it’s all business for the frequent-flyer photographer.”