We theoretically got rid of adult gifts years ago, but my sisters alternate in breaking the rules each year and give us varying levels of junk. My stepfather finally threatened them both this year that anything they brought was going directly in the donation box. They were disgruntled, but hopefully will abide. I know one sister especially likes to show her love via gift-giving, but it has to be a surprise and themed (so no steering her to getting things I would use) and it's rarely something I will use. So as much as I want to appreciate her love language, it's a huge imposition on me not to mention the environment. I have to say, as awkward as it has been, I have held strong, receiving gifts each year and never bringing them any. They never seem bothered that I don't, so that's good.
To be a real grinch about it, I also would like to stop giving gifts to the kids. I don't have any of my own, but have 5 nieces and nephews and they are all totally spoiled and have roomfuls of stuff (even though all their parents are strapped and don't know how I retired early), so while they are all very good about saying thank you and mostly acting interested and happy about the gifts I give, I'm under no illusion that anything other than them being stuffed in a closet happens when they go home. So I hate spending time working on good gifts for them, but would feel bad and transactional if I just gave them money or a gift card, because if I'm gonna give a gift, I want to put some effort into it! And I think it makes a difference to the parents that I do. And I remember that even as a pre-teen and teenager, I loved getting gifts (though I didn't have nearly so much stuff as these kids do!), so I don't want to take that fun moment away from them and seem like a scroogey aunt...but it's just so depressing knowing I'm basically giving them carefully selected trash.