Concrete blocks are a construction material, they are cheap, easy to get and easy to handle. They can be used for decorating in the garden and courtyard, even as furniture elements! Their standard gray color can be easily changed in the color of your choice. Combination of concrete blocks and wood can give great results, and also it is possible combination with metal, plastic, glass, fabric. For your inspiration take a look some interesting concrete blocks ideas and make something interesting and useful.