Behold, the Hydra! It doesn't have seven heads as you might expect, nor is it even a dragon, but it is a great way to get 5V to your project via 3 separate power connections broken out from a USB-A male connector.
The Hydra brings the 5V and GND lines from your USB power supply, computer or otherwise, and breaks those lines out into three common power connectors: Barrel Plug, JST and Alligator Clips! The clips are shrouded to avoid shorts and the barrel plug is center positive. The cable is 6 feet long overall which give you plenty of room to work.
Try this cable with the MintyBoost
for a portable 5V power solution. You could also use this cable with an iPod/iPhone/iPad USB charger or equivalent for a mains supplied solution.
Dimensions: 6' Long
Connectors: 2.1mm barrel Plug, Micro JST-PH, Red & Black Alligator clips on one side, USB-A Male on the other
Note: Remember that USB power does have its limitations. Most USB hosts will only provide between 100 and 500mA at 5VDC.