This might sound kind of "non sentimental" but it's what I/we are doing. My grandmother who is also turning 80 has cooked dinner everynight of her life for her family (when younger) and my grandfather (when older). This past year she said "I am tired of cooking and need a break", they now eat out every night! Good for her. So for her birthday, I am buying a large bouquet of flowers and then with the little sticks that cards go on in the flower bouquet, we have all (5 grand kids, 4 great grandkids) have bought gift cards for different restaraunts and are putting them on the card sticks...it's both cute and useful and won't just get thrown in a drawer or closet. ( I am also getting her a ipod shuffle, but she said she would like one of those.)