If there was more material, you could do more with it - create a model of their house using photogrammetry. Create panoramic images if the pictures intersect. Try to spot interesting historical details that might not have seemed significant back then, etc. :)

You never know - I had some contact with people gathering old photos and post cards or people trying to piece together what a particular part of the town or their home village looked like say 100 years ago and surprisingly little information is sometimes available.