if i understand correctly, ur talking about the physical "plate" to mix things on, i just bought a white plastic pallette for 99 cents at michaels craft store, in the art brush section, it has 6 wells, just deep enough to mix anything, p/g, e/s etc. without spillage, and its small enough (just bigger than the length of my hand) to fit compactly on my vanity. i chose wht plastic so i could #1 see what i was mixing #2 wash & wipe easily and #3 not have any interaction, sometimes mixing on metal surface will mess up what ur mixing,,,think about the directions when mixing hair dye, they say use plastic not metal.... hope this helps
here's a pic of the pallette:
http://www.createforless.com/Interch...-0908-7488.jpg