Jumperless is a jumperless breadboard with multicolored LED visualization ... signals is solved neatly with a tiny wishbone-shaped PCB that is reverse-mounted to the back of the main board to ...

So why should your breadboard be any different? [Axiometa] has recently unveiled a simple PCB that will plug into a standard solderless breadboard to provide 3.3 and 5 VDC when connected to a USB ...