Simplify Hardware For Robotics

As I am in the process of miniaturizing the hardware inside of my robot, I would love some recommendations for connecting many wires (say all negative or positive) to one wire. Etching a board seems overkill. Has anyone had luck with connectors that are detachable, lightweight and will not come loose during movement?

I use bits of stripboard for power distribution. Solder header pins and you are done.