As my collection of wood scraps vary in length, width, and thickness, it occurred to me that a series of boxes that nest together might be a fun project to make. Open the largest one to find a slightly smaller one inside. Open that box to find an even smaller box inside it. Open that smallest box and there may be a surprise to find inside it.
This story is not yet complete, but it starts with one box.
One Box. 2.625" x 1.75" x 1.5: tall.
Open the lid to find the lid of another smaller box.
Something inside.
Remove it to discover that lid covers another box.
Open the lid of box #2....
Box #2. 2.25"x 1.375" x 1" tall.
Box #3 is missing a lid. The lid will have a dovetailed edge that slides in from the side. That lid is yet to come. 
To find Box #3.
With a range of router bits available, and a range of scraps in varying thicknesses available, CNC cut boxes can be made in a range of sizes. The smallest box is 1.75" x 15/16" x 7/16" thick. It was cut with a 1/8" diameter bit. An even smaller box may come, as I do have a 1/16" diameter bit. Larger purely CNC cut boxes are limited by the length of the available bits and the Z axis range of my CNC. A constructed box with 4 sides, a bottom, and a lid may yet encase these nested CNC cut boxes. Time and the available wood scraps I have will tell. 
Three nesting boxes.
4D
