My front cigarette is filled with a Griffin Technology USB Adapter.  I use this unit because it allows you take off the USB cable when you no charging anything.  It also is great for passengers that might carry a Blackberry,  They can just pull out a any 4pin USB cable and give their phone a quick bit of juice.

Tonight I found myself needing a light in the rear of the Clubman.  Winter is coming and 5:oopm will be as dark as 2:00am.  I want to put a small light removable light in,  However something rolling around in the back is a no go for me.  I decided to pick up one of these.