I like to think the skittle squad sits around the campfire at the middle of their camp before they go to bed to tell stories. Stories about they're lives before the war, before Marcellion defected, and after Oblisks of Infinity: before Arius left.
It's all bittersweet, sharing old memories; missing what they lost but enjoying the moment of laughing with the family they've made.
SB and Ilyian tell stories of their vacations, interjecting to add a detail the other missed (or purposely left out). They tell stories of their families and tease each other for old gossip sessions.
Ilyian also tells stories of his time as the Wandering Guardian; who he's met, where he's been, what he's seen, what's changed over the years.
Michael tells adorably embarrassing stories of a younger Samiel and Zazriel; he tells of their mother briefly and even less so of his father. He jokes about his service in the divine military, all the stupid things he did as a new recruit.
Samiel tries to embarrass Michael right back.., it mostly fails, but when it does work he enjoys watching Michael flush crimson as he laughs at his older brother. Samiel also tells stories of his time under The Custodian's care, ones like the one he told SB in The Respite, stories of his childish stupidity.
The Custodian is the last to tell stories of themself, mostly sticking to ones of other people; the most memorable of the ascension parties, Michael's horrendous baking skills, old gossip, the works. Their stories were so rarely about themself that after their trip to The Oblisks of Infinity, their new found willingness to tell stories of themself as a twenty-something felt like whiplash. The sweet stories about Arius and Aletheia are tinted with a bit of bitterness when they remember how long ago that was.