Motorola Wireless Adapter DC600 – S9874 ($39.95 list, a cheap as $24.99 on eBay).
I have an option to upgrade my wireless phone — $100 credit against whatever Verizon offers — but they only have one Bluetooth phone and it’s not in my price range (ie, free).
A little research tells me I can add Bluetooth to my current handset (the venerable V120) for a lot less than buying a new handset would cost, and it looks like it works with a lot of Moto handsets.
Of course, this one is kind of appealing. No built-in Bluetooth but a color screen, smaller size, and the camera (are these really worth it?) could be fun. When I look around at all the Google flotsam around Bluetooth and Verizon, no one mentions this adapter: it might be that it’s new (webloggers rarely hold their tongues about products they find unsatisfying).