I read a great blog post about this! This was some of the inspiration and thoughts I took away with it.
The story of why you exercise or why you don't.
The story of food - do you make it? Like to cook? How do they relate one meal to the next? I took a photo of the fridge door open. I'm actually surprised at how in 2 years the contents that remain the same are not as many as I thought.
The story of sleep - what's your routine? A photo of your toothbrush and toothpaste, your jammies, bedside table, sheets. For me, I have a totally different routine on the nights my husband works grave shift compared to when he's home.
I screenshot my phone and the apps on it. I added a screenshot of the apps open that I check first thing in the morning.
Does that give you a few ideas?