* the original iPod shuffle which you plugged in like a USB flash drive
* 2nd gen iPod Shuffle which used a special 3.5 mm minijack docking station for charging
* 3rd-4th gen iPod Shuffle which used a 3.5 mm minijack to USB cable
Update: If you do include MagSafe, you might as well include the 3/32" sub-mini and Barrel plug variations for the really old Powerbooks and iBooks http://support.apple.com/kb/TA32393
* the original iPod which used a Firewire port
* the original iPod shuffle which you plugged in like a USB flash drive
* 2nd gen iPod Shuffle which used a special 3.5 mm minijack docking station for charging
* 3rd-4th gen iPod Shuffle which used a 3.5 mm minijack to USB cable
Update: If you do include MagSafe, you might as well include the 3/32" sub-mini and Barrel plug variations for the really old Powerbooks and iBooks http://support.apple.com/kb/TA32393