Another accidental original, the result of waking up in the middle of the night and staggering around with imperfect memories of the origami book I'd been browsing before bedtime. The fundamental unit for each side is a square of what Tomoko Fuse calls the traditional chrysanthemum base, augmented with a simple insert made from 1/4-sized paper.
The end shape is a truncated cube, with all eight cube corners chopped off (or more precisely, indented) so that each of the originally square faces is now an octagon. At the time, I'd been failing to remember how Fuse locked together the similar-looking "lantern assembly", an even more truncated cube with (iirc) glued joints. This kusudama shape holds together without glue, thanks to the indented edge hinges.
Each hinge is made from a blintzed 1/4-size square and pre-indented by inserting it into two square faces and folding in the squares' corners to form the octagon. The kusudama is then assembled like a normal cube; the corners are re-indented afterward to lock the shape together.