When seeking words to describe something that is both cheap and commonplace, there are a variety of synonyms that can be utilized. Some options might include words like basic, ordinary, conventional, and mundane. Other possibilities might include words like standard, typical, average, or unexceptional. Still other options might include words like run-of-the-mill, garden-variety, and everyday. Ultimately, the best synonym will depend upon the particular context in which the word is being used and the tone that the author wants to convey. In any case, however, there are many great options available for those looking to replace the word "cheap and commonplace" with something more interesting and nuanced.