Trader Joe's, where I work as a sign maker, is selling the ingredients for a gourmet version of "S'mores," the sticky melted campfire delicacy. I did this sign for a display of these goodies. The main board is a Masonite panel, painted in black chalkboard paint. The colors and lettering are done with opaque acrylic markers. The extra pieces around the edges are done on foamboard with spray paint and more acrylic marker. Signs at my Trader Joe's are currently multi-panel assemblies, complete with comic book-like frames.