if characters have met yachi or have had an interaction with her, they'll be getting a holiday greeting card of one of her pokemon, hand-drawn and designed herself, along with a pack of assorted sweets and berries for your pokemon!

mikasa: a HUGE BOY and little personalized hats for each of her pokemon!
armin: a framed picture of her and mikasa holding their first badge from falkner, looking happy and cute; a basket of christmas-themed goods for his pokemon; a LORGE GIRL!
jaskier: a painted and designed portrait of shiny galarian rapidash!
leonardo: paints. lots of paints.
kazuki: a music based stationary set & agenda for the new year, an altaria quill pen and meganium scented petals!

will add more if i think of more things!