I don't know about you but I like to sketch in my journal.
I will simply sketch anything that grabs my attention or that I want to remember, no matter how insignificant it can be. To keep a visual record.
I sketched that electronic thermometer the day after I had an infection and my temp reached some worrying level, while I was still recovering at home (the temperature reached 39.7 C, approx 103F, and when I called her the following day to inform her of what happened, my doctor was very unhappy I did not call her immediately 0:p)
I have no particular skills and zero illusion to ever become a professional artist, mind you. And that's fine with me. I have fun sketching (and painting) and, later, while I browse the pages of my journal I will often have fun looking at those silly sketches. Often, not always ;)
Someday I will sketch plenty unrelated stuff. While other days I won't sketch anything. And that's probably the one thing I would love to be more consistant at—sketching at least once a day.
What about you?
Do you sketch in your journal too? Or do you do any other kind of visual stuff, just for the fun/joy of doing them, or for some other reason? Decorate your journal maybe?
Are there stuff you would like to improve?
For example, I would love to get better at doing nice page layout in my journal. We can see so many gorgeous examples online, whereas mine are, well, blocky at best.