Outdoor "rug": Update a concrete patio using a stencil and paint! Tape off blocks of color with painter's tape and stencil your design with acrylic paint. Protect your outdoor rug with clear satin concrete sealer.
Do you want the look of expensive slate but don& have it in your budget? Consider painting it! I painted my front walkway, using concrete paint, to look like slate! Using specially formulated paints specifically for concrete you can.