Coming in hot with my annual rant about my in-laws gift giving culture.
Drives me absolutely nuts. EVERY person gets EVERY person a gift for EVERY holiday. So, for example, for mothers day, every mother got every other mother potted plants. It was like a damn florist's shop.
This extrapolates to birthdays, Christmases, Father's day, Easter. My wife spends probably 1.5-2.5k per year on gifts for family members. Christmas is a orgy of gift-giving, with literally 20-30 gifts per person.
I long ago decided that trying to stop this was a hill not worth dying on (as gift giving is a strong part of their familial love language), but I intend to seethe quietly about it in the background for the rest of my life and try to instill different values in my children.