I got the idea for this nest box after recycling a beer box. The dividers for the beer bottles are similar in construction.
The individual parts are simple to make and easy to disassemble. This makes it easy to clean. The pieces are 1 foot wide and when assembled, create a 1'x1' series of nests.
With this box set on a shelf and wedged between the walls of the coop, it is sturdy. The additions of cleats in the front of the box will help hold in nesting material and eggs.