I'll post more about the weekend soon, but wanted to mention one tidbit while I was thinking of it:
On Sunday afternoon, I was at the park with Debby & John and the kids, and a woman sitting nearby, who Debby had had a brief interaction with earlier, called out across the playground to her daughter; I forget the exact words, but it was something like "Okay, Agent X-19, it's time to go home!"
Debby asked the woman about it; she explained that her daughter liked to play secret agent, and X-19 was her code name.
I was amused and charmed—both that the kid had a secret-agent code name, and that the mother so casually (and affectionately) used it when calling to her across the playground.
I know parents call their kids by nicknames in public all the time; I think part of what I liked about this was that it was an unusual and adventurous-sounding name that, in context, had much the same tone/flavor (to my ear, anyway) as calling a kid by a more common nickname like "Junebug" or "Bean" or "Pumpkin."