Apart from printing out miniatures from printie sites, you can print other things, for instance specific book covers. I have made books with covers I found in magazines and catalogues, but I have always chosen books that I would have in 1:1. Still, there are lots of books I own and like that I haven't found covers for, so the books I have in my various houses and room boxes do not quite reflect my book preferences.
For my yarn shop project I need knitting books. I tried to save images from amazon, but when I resized them they became blurred. I tried to print out direct from amazon page, but the images were too large. I then took the page with "Recently seen" where images are smaller. It worked well. I printed out the covers and made fake books in the usual way.
Then I made something I had wanted to make for a long time: miniatures of some of my own books.