As someone who is... not great at gift-giving, Cassandra still makes the effort to send something out to her acquaintances.

For Elsa, Cassandra's gift is, in part, herself. But she's also taken to task knitting a new pair of mittens for her wife. They're some of her best work so far, and comes with a bonus: a special mitten designed for both of them to wear. Because holding hands doesn't mean they need to be cold. There's also a single flower made of yarn, to show just how far she's come with her yarncraft.
For Lup and Taako, Cass did quite a bit of scouring, and it took some time, but she found them another pearl - one that isn't magical, she hopes. It's also not nearly as big as the first one, but they can take what they can get, ok.
For Lust, a new robe, fur-lined and plenty fluffy. It's been tailored to have two pairs of sleeves to accommodate her arms.
For Korra, there's a wrapped Monster Wrestling Champion belt - technically it was already hers, but since Cass won the last tournament, she gave it back to the 'real' champion to continue the 'story arc' they have going on about the belt's ultimate power. There's also a batch of bakery cookies.
For Maya, it took some digging around in The Cube again, but Cassandra eventually managed to find - and package - a wholeass spear. The exact same sort that the Steel Samurai uses in his crusade against evil. It's been sharpened to a point (which an attached note mentions).
For Riley, a small care package appears on her doorstep. Some treats, leg warmers. Things of that nature.
For Javert, a single jar of peach jam, once again, left on the doorstep of wherever he's staying now.
For Bruno, a new set of blackout curtains for his bedroom, extra thick to make sure no light gets through.

And everyone who currently works at Juno Steel Investigations receives a nice bonus in their pay this month, along with a holiday card.