I don’t know if that’s every single one, but it’s a heck of a lot for a two-hour film.
I went through the film, shot by shot, multiple times.
Which, given that this is Spider-Man: Into the Spider-Verse we’re talking about, was no hardship.
On the Spider-Man: Into the Spider-Verse Blu-ray, producers Phil Lord and Chris Miller say there are so many Easter eggs in the film, they don’t even know how many there actually are — or even if they themselves know them all.