Are you familiar with the senior center she is moving to?
At Christmas last year, our guild put together gift bags for the residents. Some of the things that were included were placemats and pillow cases. If it's a situation where she wouldn't be eating in her own unit/room, maybe a few mug rugs, instead. Even in nursing homes, residents usually have a pitcher or glass of water or juice. Anything to add a little color and cheer.
What a lovely idea to acknowledge that while something she enjoyed and looked after is now being enjoyed and used by you! I'm sure she'll appreciate anything that you make with the machine.