A "Nativity Photo Shoot" idea
Way back in 2003, I belonged to a new church development that was meeting in a movie theater complex. We had limited time to use our limited space on Sunday mornings, but we wanted to have some sort of "pageant" during a worship service before Christmas. (This idea could be used outside of a worship service too.)
So one Sunday afternoon we invited all interested children to come to the church office. The temporary office was in a house on a farm (long since turned into subdivisions), so the outdoor locations were attractive. We put the kids in costumes and arranged them in tableaus to fit the Script. Anyone who wanted to be Mary, Gabriel, etc. could, for at least one picture. They just wore the "Mary costume" or the "Gabriel costume" in one of the shots.
In order to involve children that could not make it to the official photoshoot, the next Sunday we took more pictures before Sunday school of individual angels, shepherds and sheep, some of which were made into group shots and some left separate. They were quickly costumed in big white t-shirts with tinsel halos or paper sheep ear headbands.
To adapt this idea for current distancing needs, you could schedule families to come at different times and compose scenes from those family members. Or families could be assigned scenes and stage their own pictures and send them to you.
You can see the full script and description of pictures Here. (I am sorry to say the pictures were online at the church website until someone decided to update and clean up the site, and I did not save them.)