This will be a short post, but it’s got a couple of decent ideas
Given the circumstances, now is a great time to go through your old photos. Sort out the ones worth keeping and consider discarding ones where you have a ton of extras or duplicates.
Post a few online if you’re comfortable. You might be surprised to realize that you have the only copy of a picture, and someone in your family has never seen it before.
Mark the day, time and people in the pictures. It seems obvious right now, but it can be tough to remember details like that in five or ten years, let alone beyond. It only takes a few minutes, but it can ease a lot of confusion when it comes to figuring out who is who down the line.