A comment on my Sheer Heaven palette post mentioned Daniel Smith Paint Dots. As coincidence would have it, I had just purchased some - and it is a great idea, but I wanted bigger dots, so I made my own dot sheet with Daniel Smith paints on Sheer Heaven. It works great.
Since you can make your sheets any size, they fit very nicely into any tin or box - just double stick tape the sheet to the bottom of the box!
See the whole post here: