Halloween craft: Mosaic Storage Box What you need: -An old styrofoam cooler -Elmer's glue -Counter samples -Tile grout -Tin snips -Spatula (to apply grout) How to make: Using your tin snips, cut shapes in your counter samples. Design a pattern. Glue on counter samples onto styrofoam box. Wait until all are dry. Spread grout with spatula in between tiles. Use a damp rag to wipe clean, wait until all grout is dry.