Back in 2004, I ran an article in the online magazine I published then, about the "perfect" travel palette, made from my signature art paper, Sheer Heaven. Sheer Heaven has unique qualities that make this idea work flawlessly, and the palette is infinitely refillable and impervious to moisture. I know there are some renditions of the idea out there these days using watercolor paper, but there is no comparison.
Cathy and several other folks have asked me recently to bring that article back around - because the idea is so useful, and ideal for journaling artists.
So, I put the whole thing on my blog, and won't take up the real estate here to repeat it. Here is the link to the full description - mixing colors and all: