The only books I buy in paper still are cookbooks. There are a few of those I got from the library in ebook, but if I am buying to use at home, I prefer paper for those.
I still have some fiction (one shelf's worth) not available in ebook, but I do not buy fiction in paper anymore at all.
As far as 'collector's item' type stuff, the only thing I have is three books my grandmother gave me that are sentimental favourites, and I have some special shadowbox frames for them so I can display them and protect them. I treat them more like an art object (it is my one big memento from Grandma) than like a book, so I am not sure that counts in your question
