For these, I did a watercolor smoosh technique like this one from K Werner using Squeezed Lemonade and Shaded Lilac Distress inks. Then I trimmed the paper down and made matchbook notebooks. I added word sickers from Cosmo Cricket and a colored staple. That's it. The thing that took the longest was the drying time for the watercolor!
You could make a lot of these if you needed them in any colors of course. Maybe I'll make some for Christmas gifts next year in red and green or blues.