Tiny Details I Noticed During My Brand Search of Sing 2
There are several posters throughout both cities with the words "Love, Respect, Protect" next to what looks like a jaguar or an ocelot on them.
Johnny's nails appear to be painted the entire time (shiny and reflective when they are matte in the first movie).
In the background of the scene right before the piglets come in, you can see Johnny and Meena talking. Johnny says something towards Rosita, she turns and throws a pillow at him, and they all burst out laughing and smiling. Which is just down right adorable.
THERE ARE THREE HIDDEN MIKE POSTERS. THREE. TWO IN THE CRYSTAL THEATRE AND ONE BY THE MOON THEATRE.
The advertisements outside Moon Theatre are frames from the first movie.
In the scene where the giraffes coming out of the elevator slip due to the troupe mopping as a disguise, Ryan appears to start smiling/laughing in the corner.
There is an award shaped like Nana herself on her bedroom fireplace mantle.
Every time something big is proposed or annouced and we get to see the troupe's immediate reaction, Johnny and Meena do the "are you hearing this?" best friend glance and its so cute. I'm not kidding, every time.
The plan to go to Redshore.
2. The disguise plan.
3. Rosita being fine with being replaced.
What appears to be a yoga studio chain advertises in both Calatonia and Redshore and has the tag line "Be Pawsitive".