A couple years before my grandma finally died of the cancer she had for a long time, she asked for donations in her name to St. Jude Children's Charities, and I gave $100 in her name.
Guess who gets an annual reminder of their dead grandma for the rest of his life, now?
It's more annoying than saddening (we didn't have a great relationship) but that was >20 years ago and they have somehow followed me from address to address to address.