In case you weren’t aware of it, Apple maintains a dashboard for you, tracking all of the devices you have associated with your Apple ID, and providing you with information about them.
For instance, for ともだち (tomodachi), my trusty 13″ MacBook Pro, I can see my model number (13-inch Late 2011) and serial number right from the front page. By clicking through, I can also my built-in warranty and Apple Care coverage details, with links to contact Apple support. This is also true of repair coverage, and the ability to set up a repair online. There are even tabs to show me any service or repair cases the product has had. And finally, there’s a tab with a list of FAQs that pertain to the machine in question.
I was kind of surprised to find my very first (5G!) iPod on there. Since I no longer have this device, I took the opportunity to disassociate it from my account. (Oh yeah, the site lets you associate and disassociate items from your Apple ID.)
It’s not a ground-breaking site, but I know a bunch of you have Apple devices (ranging from those of you with an iPhone, to those have consumed the entire flavor spectrum of Cupertino Kool-Aid), so I thought you might find it useful.