I have 3 concrete splash blocks that you use at the end of gutter downspouts to spread out the water. Each one is 12" wide and 36" long and weighs around 70-90 pounds. They are in good shape, with no cracks or missing chunks. Pick up at my home in Rockville (adjacent to Flower Valley neighborhood) - bring a helper or some way to move them. Putting them into the trunk of a car is not a good idea unless you want a hernia...
Reply with your name, phone number, and email; I'll reach out to you to coordinate a time for pickup. Thanks for looking!