I'm suffering my first post-tournament cold and don't feel like painting, so thought I'd share a helpful trick to produce my hobby quota for the day.
This isn't my idea, though I wish I had thought of it. In his DVD set "Hot Lead", miniature painting bad-ass Laszlo suggests tracking colors and techniques used in a watercolor pad. I was getting tired of keeping up with all the scraps of paper I'd accumulated since starting painting, and thought this was a nifty idea. I went to the local Blick and got the first spiral-bound pad of watercolor paper I saw, a Montval Field Watercolor Book, from Canson. It's 10x7 with a nice solid cover and 140-lb. paper. It did not take long to get into the habit of painting a swatch of each color used, with a quick note describing color names and ratios.
About two years later, I've nearly filled the journal and never have to try to match colors to older miniatures because it's all right there. Well, GW's paint range apocalypse does force some reformulation but at least I don't need to strain my memory too. I even record colors used on one-offs, like the mangler squig model I don't plan to paint two of, but whose colors I want to repeat on my daemonettes. I also like to make non paint-related hobby notes in it, like plans for my movement trays.
If you think this might be useful to you, try it! It's a durable, fun, and easy way to remember what you've done. Highly recommended.
Hot Lead Montval watercolor paper