I have written a dissertation about hearing difficulties of older people. The interviewees were grateful that they could tell someone about their lives.
I have read a book. – My parents read it too once and I was able to talk to them about it. Surprisingly,it was interesting to discuss this with them.
I bought paints and spent time with my daughter painting pictures. My daughter can paint insects! I built a website about ecology. I adapted it for the visually impaired. You can enlarge the font. – It will be better for them to read.