Hey,
I got you an invisible shelf for a couple of books.
I think it might be useful for a few people who want to keep their books decoratively stacked.
There are two versions, they differ only in design. However, they cost the same in terms of material and time for printing.
I recommend to print models from PTEG, but I printed from PLA and it can hold the 3 books fine.
After printing, simply glue two hooks to the shelf with second glue to secure the back cover of the book.


Next, just screw the shelf to the wall (preferably straight :D).
The screw holes are modelled for a screw diameter of 4 mm.
The book slides onto the shelf by leaving the lower binding under the shelf and catching it only by the hooks to prevent it from opening (as shown in the picture).

That's about all you need to know, it's very simple. I think the resulting effect of levitating books is worth it.
Have a fun :)
The author marked this model as their own original creation.