https://www.lowes.com/pd/Holland-Red-Charcoal-Concrete-Paver-Common-8-in-x-4-in-Actual-7-75-in-x-3-88-in/3010214 Holland Rectangle Concrete Paver (8"L x 4"W x 2"H, 2 colors) on sale for $0.25. Select free store pickup where available.