Sharing Google Photos

There is a "Facebook", but I've always felt there should be a "Familybook".  We don't live in isolation of each other, we have families and each member of the family has personal electronics which can take and view pictures and store music tracks.  In the pre-smartphone home, these were easily shared between family members.  You could reach in the bookshelf in the den to view photos.  You could borrow your sister's Metallica album, etc.

Now that you know my mindset, is there a hidden way in Google for my family members to share our Google cloud files (Google Photos and Google Play Music) between family members?  The only option I have seen so far is to literally log out of your account and log in to your family member's account.  I know you can create a photo album and make it available for "public" or "family" but this is not what I'm talking about.

As an example of my intent, my wife and I are going on a cruise next month.  I will be taking photos with my phone, as will my wife with hers.  When we get back, we (meaning she) wants to merge them then go through and pick out the best to be made public.

Ideas?  Hints?  Compassion?

TIA