A few nice bluetooth usb dongle images I found:

sainsbury's £6.99 bluetooth usb dongle


Image by osde8info
sainsbury's £6.99 bluetooth usb dongle
maybe i should take my staples £10 ones back !

billionton Bluetooth USB Dongle


Image by Cujan
Brand: billionton (互億科技)
Model: GUBTCR41E
Chip: CSR BlueCore4
Bluetooth 2.0+EDR Class 1

Driver: Toshiba Bluetooth (PC Bluetooth Stack)