A really big thing of my mum's was diaries: she is still an aspiring Samuel Pepys, and writes every day. Early on, she made us write diaries (she was a teacher). In our early years, she did this herself with us there, writing them from our point of view, in the first person, with lots of pictures, which she got us to help with drawing.
I liked this at first, and the early diaries are treasured possessions. Sadly, I resisted this as I got older, as I just didn't share my mum's pleasure in writing. It became a chore ("you've got to write your diary, you've only written about the first day of the holiday"), and for me, this obligation spoiled the enjoyment of going on holiday, especially as she used to inspect them, like tidy bedrooms. I had a good memory, and still do for my childhood, so I didn't feel the need to write about things I did. I also remember a realisation that school trips were always followed by having to write about them.
Occasionally I wrote a diary as a teenager, full of Adrian Mole-style rantings about the world, but I rarely look back on it.