Asgard posted his Powah, a little power on/off toggle with an indicator LED in the project log forum:
This is a “standard” module I use for some of my other projects (see the BLiVIT thread). This version is a simple CMOS-level on/off toggle with debounce. The optional four pin positions just happen to lay out so the Powah can be plugged into a breadboard or “hack” area of another board (0.400 x 0.400 inch). I currently am planning to make this available in my Tindie store. Included here are top and bottom photos, plus a schematic.