Breadboard Extenders

Spent a little time working out a way to make a configurable pulled up/down switch. Just need to get as many as I can on a board. Was using my switch board tonight and didn't like having to make all those little connections. So I think I'll have to do this idea.

use one of the square prototype boards to make a 555 timer (clk) circuit, maybe use male header pins to plug into breadboard. (more of a wiget/extender combo)