I'm finding the move back to physical books from Kindle quite interesting. It seems to work better with habits of deep concentration for me - the Kindle has little too much of the "I'm bored. Let me just change tabs and see what else is here" effect of electronic devices because it's basically a library in a tiny box.
I'm still using the Kindle for fiction, but I seem to have mostly switched to physical for non-fiction (and not just because of gifting)