Simple modern knot shaped book end.
I have included a version with a flange and without. The flanged one will use a book as a weight to hold the bookend in place. You can pause the print of the no flange version and fill it with some kind of weight to weigh it down.
I recommend slicing the .step files to get the smoothest curved surfaces.
I printed with polymaker polyterra white PLA with tree supports.
The author marked this model as their own original creation.