My Bible would be my dearest possession. It’s where I try to start each day and still, to me, is the best book for going through life. And yes, I still use a physical Bible. I only use the one on my phone if a physical Bible is not available. Speaking of my phone that is now probably my second dearest possession.
I often think of this question in terms of what items would I want to grab if my house was on fire. So I would definitely want to save my Bible, my phone, my keys and some pictures of my family.