How do you assign reading homework?

I have tried multiple ways. I have sent home paper books that the students keep along with comprehension worksheets. I spent hours of my time making copies of leveled books so that kids would have just right books. I then had to fold and staple each book. You can see why that got old. I have sent home actual books from our book room. The kids had a book bag that they were responsible for taking home each night and reading. I had a few books get lost and a few kids who never remembered to take their book home, so that wasn’t working for me either.