What happens to your ebooks when you die?

What happens to your ebooks when you die? Can you bequeath them to someone else?

I've always tried to buy physical books (mostly used, because I'm on a budget) because of reading style preference and the ability to give them away for somebody else to enjoy after I'm done with them. But I also have an ebook collection that's restricted to particular ereaders. Unless I give my account details to someone else, it seems like the collection will just die along with me. Thoughts?