Here's your starter sentence .....
Der Hund ist braun.
Let's change the "Hund" ... Der Lutscher ist braun ( hardly appetising)
Let's change the adjective ... Der Lutscher ist schleimig ( even less tasty)
Let's change the gender.. Das Klavier ist schleimig ( hardly helpful)
carry on mucking about.. Das Klavier ist unglücklich ( no wonder)
Die Möwe ist unglücklich ( too many chips)
Die Möwe ist rechteckig ( crumbs)
Das Steuer ist rechteckig (unusual)
.... and so on, getting we hope, sillier and sillier ... which is good. The whole idea is to get using nouns and adjectives, learning new words or reinforcing them.... and having a bit of fun at the same time. Beginners often do much better with a structure to start with and change slightly .. they have fewer things to worry about. I call these things " drop-ins" because you are dropping in a replacement word. There are other uses for "drop-ins" as you will see.
But now, it's music time .. it's the excellent Jean's Team and "Das Zelt" ...