I had first seen a version of this field kit being used by a woman working in the Jardin de Luxemborg one afternoon. I promptly appropriated the idea and constructed one of my own. Compared to the plastic ones that proliferate the market, this one is virtually indestructable. Born from a salvaged Altoids tin with the exterior sprayed in flat black enamel and a semi-gloss white enamel sprayed to the guts. It holds ten half-pans that are held in place with a thin strip of double stick tape, as well as a collapseble brush. Great at setting off the x-ray machine at aiports as well.