My lo-fi practice is one of my most cherished activities. I write in my journal most every morning, just whatever is on my mind, with my to-do list right next to it. If my mental ramblings uncover a task or project, it gets captured tight away.
I also keep a "Book of Days" where I write a couple of sentences about what happened that day:

The Book of Days is a five-year journal. The premise is that one has a page for daily entries for each day of the year. Each daily page has room for five entries - one per year from 2008 to 2012. This allows you to see what you were doing on a particular day each year. As time goes by, you will be able to track your progress, seeing just how far you have come since the same time last year.
I made this set of three books from blank 5 x 7 journals from Barnes & Noble. The customized covers were created by printing a perpetual calendar image I found online onto parchment paper.
It is pretty cool now that I am into the second year to see what I was doing on this day last year, and I suspect that I will be amazed by the changes 4 years from now.