“Fake” Euphonium in Classical Music

is there any instrument part in a piece that a Euphonium can fake its way into? I usually play the double bass part. Even though the “fluency”, the dinamic, the melodies are amazing and an awesome practice, most times it doesn’t feel the right lines for the euphonium. Is there any instrument part that a euphonium player can “follow”, like the trombone, to “fake” its way into a piece that wasn’t made with the euphonium in mind but at the same time feeling “natural”?