Some of these words such as Kuttelmuttel (chaotic situation), Remmidemmi (noisy get-together), we often hear.
Others such as Mumpitz (nonsensical stuff), I’ve only heard once in my life.
Choose your favorites, and don’t forget to practice by saying them out loud.
Visit https://www.buzzfeed.com/de/philippjahner/schoene-deutsche-woerter to the see the list of the best 29 most beautiful German words.