This is a book stand for your library that makes it look like Yoda is holding your books using the Force.
Since the models are separate and the pin holding the character in place is on the book stand part, you can also just print the Yoda as a figurine.
Check out my Darth Vader model, compatible with the same book stand, if you are on the dark side of the Force: https://www.printables.com/model/432680-low-poly-darth-vader-book-stand-book-end
For the Baby Yoda:
For the stand:
The pin and the hole are a very tight fit, you will probably have to sand the pin a bit, but it's easy to do.
If the book stand slides due to the weight of the books, use some adhesive putty like Blu Tack.
The author marked this model as their own original creation.