OT: What can I buy for my grandma's 79th Birthday?

She's not in to bags, so this is really OT. But you are all so wise, I thought I'd ask you.

My grandma will be 79 this month. She loves knick knacks and jewelry, but doesn't want or need any more of either.

Last year I brought her with me and my girls (her great-grandkids) to see Disney on Ice, but she said it was too long to sit.

For Christmas, I made a Lunch of the Month card where I am/will be taking her out to lunch every month from January-June. She likes that gift somewhat, but complains when the check comes and she tries to pay, making it pretty akward.

I really don't want to clutter up her small apartment with knick knacks, but "experience" gifts are working out, either. What should I get her??