Packed Cubes
A hexagonal field of cubes, each cut again and again into boxes along its own small grid. Thin gaps between the boxes show the pieces packed inside.
About this shape
Recursive box packing, seen from the corner
Every cube is a block of n × n × n little cubes, and it is cut: once across, then each piece cut again, always along the grid, until the pieces are small or chance says stop. Each piece becomes one box in one tone, set back a hair from its neighbours so that the seams open and the boxes behind show through.
Seen from a corner in isometric view, the far side of any cut always lies behind its near side, so the boxes are drawn in the order they were cut, far half first, and the picture is right with no sorting. Each cube takes its own few tones of the ink, which is why neighbours differ, and one light from the upper right shades every face, so the top of a box is always lighter than its sides. In motion the cubes build up box by box, out of nothing.