Peridot repeating “Steven Universe Future!” at the end of the song. She also does this in her “FREEDOM IS MINE” pose, a.k.a. when she first appeared as Small!Peridot. First Trailer. It’s a blink-and-you-miss it shot, but Garnet’s idea of teaching yoga is to do an upside-down T-pose. Steven joins in as well, doing a handstand.

https://tvtropes.org/pmwiki/pmwiki.php/Funny/StevenUniverseFuture