Someone at the office brought a cake to work to share with everyone. In the cake box was a plastic square tray on which the cake rested. Once we finished the cake, the square tray was headed for the dustbin until my eye fell upon it and an idea to turn it into a tray/placemat popped into my mind.
First I washed the tray and dried it. The next step was to cover the surface with beige acrylic paint, applied with a piece of cotton wool to obtain a "dabbed" effect.
I then used brown and red acrylic paint to create random patterns.