So, I was canning summer vegetables and crying all over the tomatoes. I was listening to the radio program "This American Life" and a rebroadcast of an episode from last summer. The story was about Karen, her husband Mondy, and her mother Virginia. Virginia has dementia. Go listen HERE. Start listening at 27:30.
Then go to Karen's website: In the Moment (new version) and learn about her tools and techniques. As she says " In the Moment ... was developed after my surreal world of improvisation collided
with the very real world of Alzheimer's disease."
Then go to her other website Ubuntu. Looks like some good resources. (note: 2018 Ubuntu web site down.)