You might look into Anderson Power Pole connectors. They are fairly inexpensive and work very well. You can purchase them in specail power strips, or make your own. They are easy to assemble and they are easy to assemble so they are polarized so you don't hook them up wrong. You can generally get 25 pairs (black and red shells) for about $25 US. Other color shells are alos available so you can color code 5V 12V and other possible combinations. Used to use Red/Black on RC car batteries and Green/Orange on the motors. They also take up little space so you can have a lot of access points in a small area.
Check them out here - http://www.powerwerx.com/anderson-powerpoles/powerpole-sets/15-amp-red-black-anderson-powerpole-sets.html
I have used them for RC Cars, Ham Radio, DC power distribution in a house with only solar power.