I send my stepmom and MIL flowers. Our girls aren't married, there's no grandkids and we still shop for our grown kids, but I mostly just get things they've added to their Amazon lists. It's usually books or kitchen things and the occasional surprise if I know of one. Stuff they would like, but might not buy for themselves. My lists consists of mostly books, a few suggestions for gift cards (usually online yarn stores Lol) and a the random kitchen item sometimes. No one gets everything on the list. I don't shop for other family anymore for the most part and DH and I dispensed with gifts years ago.
We do this because it just wouldn't seem like Christmas w/o the gathering around the tree on Christmas tradition.