My DH and I have been giving his parents an anniversary gift for the past few years, and I just found out today that my BIL and SIL only give them a card. Now I'm wondering what other people do.

We usually give them a gift card to a nice restaurant or a gift basket of some kind. We typically spend about $50 on their anniversary present.

I've enabled multiple votes in case you do something different for each set of parents.