A friend got me this petit Bluetooth adapter while he was having a vacation in HK.
Unfortunately, due to the fact that I'm guessing there's no industry standard on how much clearance there must be between the USB port and the casing they couldn't make the thing sit flush in the connector.
Sure it's pretty hard for something this size to snag on something but there's always a chance....
This is of course the same petit dongle you can get over at Brando's.