Breadboards are very handy, but sometimes I just want to connect one IC or some LEDs and resistors to the controller.
My simple solution was to canibalize a cheap Breadboard to get two expandable PrototypingShields with some additional features.What I used:Breadboard (~3$)
2 Pieces of Veroboard (<1$)
28 PinHeader (<1$)
28 femaleConnectors (<1$)
and some epoxy to get it smooth and fixedTools: