How can I store or display books?

I use books as apart of my accessories. https://lifeonsummerhill.com/ There are loads of examples on my website. You can also stand them on end with bookends holding them up. And I saw another person who did wall art with books. https://www.instagram.com/p/Bt5t8yFFPkc/

1. Lay It All Out. The term “coffee table book” exists for a reason. ...
2. Show Them Off. Wall shelves work well where bookcases often do not. ...
3. Stow Aways. A storage ottoman is an excellent piece of furniture for keeping items out of sight. ...
4. Basket Case. ...
5. Use Every Available Space. ...
6. Easy Access. ...
7. Create a Great View.

Stacking them would be easiest.

Use them as decorative items throughout your room or home. You could stack a few of them and "belt" or tie a few together. Stack a few books to use as risers for other decorative item such as plants, clocks or decor pieces.

Concealed book mounts are one option.

http://bestshelvingunits.com/top-10-invisible-bookshelf-for-your-rooms-review/

Book furniture!

https://smallhousedecor.com/furniture/bookcase-chair-inspirational-designs/

And, last but not least, a Christmas Tree!

we have bookcases in all our rooms except bathrooms. Mostly built in bookcases which was one of the first things we made when we moved here in 1971. However thay are all different kinds, many of them "found" You can stack them on your steps, when we first were married we used metal strips from the hardware store that held brackets, that held wooden boards. Are you just looking for unique ideas or is there a special reason you do not want to use shelves?