I like to think each of the BG3 companions makes a little change in their appearance/outfit after the game ends, if they’ve been persuaded to distance themselves from their abusers gods and masters
like Gale stops wearing the Mystra earring for something else, something he feels more connected to (something related to his partner, perhaps)
Wyll replaces his sending stone eye with a different prosthetic eye. maybe he has a collection! maybe they’re magical in different ways!
Shadowheart throws her Sharran circlet away to experiment with other jewelry (she already changes her hair to white, so why not go a teeny step further?)
Astarion doesn’t really wear any trappings of Cazador but I like to think a spawn version of him would be interested in wearing more colorful ensembles, rather than the tired black and red (even though he looks good in black and red)
Lae’zel begins incorporating more comet motifs if she’s fighting against Vlaakith, or wearing more non-gith clothing if she’s hanging out in the Sword Coast
Karlach, at last, after finally escaping the hells for good and forever, starts dressing in something other than protective/fire-resistant leather. Nothing wrong with leather, but a girl wants to wear something soft every now and again and it’s good to know she can wear something like cotton or linen without setting it on fire
Halsin finally laying down his druidic armor and…well, we know he’d just go without clothing entirely if he could, but getting comfortable with wearing casual, non-armor outfits all the time, getting comfortable with the fact that he doesn’t have to don symbols and medallions showing his leadership role and allegiance to a specific grove (and probably very relieved to finally set those down and never pick them up again)
Minthara contemplating having someone retattoo the symbol on her neck to obscure the connections to House Baenre or adding another tattoo elsewhere to memorialize her allegiance to either herself or her romanced partner
I just like the idea of the companions acknowledging the little ways they’ve reinvented or adjusted their identities by making little cosmetic changes