The opening sequence of the film brings us back to the events just after Marvel's The Avengers, and here we see Toomes' showing off a drawing his child has done of the original team from the film.
One of the flying Leviathans from The Avengers also appears in the background of the sequence.
The name for the Department of Damage Control comes from an actual Marvel comic about regular people cleaning up the messes left by Marvel superheroes.
One of the members of Toomes' crew, played by Michael Chernus, is Phineas Mason, aka the villain The Tinkerer. Homecoming actually has six different villains from Spider-Man's rogues gallery.
We get to see part of the airport fight from Captain America: Civil War play out from Peter's perspective!
In the hallway for Peter's school, two very familiar faces can be seen on the wall, including John Slattery's Howard Stark and Stanley Tucci's Dr. Abraham Erskine...
Plus Mark Ruffalo's Bruce Banner makes an appearance in Peter's science class.
In the YouTube video about Peter, it describes him as the "Amazing" Man-Spider, a reference to the long-running comic series for the character "The Amazing Spider-Man."
Peter frequently webbed his clothes to a dumpster in the pages of Marvel Comics, referenced here.
Lee, co-creator of the character, appears as a neighbor in the film who gets in a block-wide shouting match.
Chris Evans reprises his role of Captain America (in his Marvel's The Avengers costume) for a Physical Education video.
Appearing in this scene are Logan Marshall Green as Jackson Brice and Donald Glover as Aaron Davis.
Green's character originally appeared in The Amazing Spider-Man #10 back in 1964 going by the name "Montana" and serving more as a typical gangster character. It wasn't until the 2008 animated series The Spectacular Spider-Man that he became the super villain The Shocker, which he takes on in the film.
Glover's Aaron Davis is the Ultimate Comics version of villain The Prowler.
As Spidey runs through people's backyards, it's a direct homage to Ferris Bueller's Day Off, one of the influences of the film. In addition, they flat out show the movie playing on a TV in case it was lost on you.
Toomes' coat has the same puffy collar that The Vulture has frequently worn on his costume throughout the years.
Ned's laptop has a number of stickers on it in reference to popular memes like the This Is Fine Dog and Me Gusta Face.
Both Jason Ionello and Betty Brant are classmates of Peter's from the pages of various Marvel Comics. Brant even becomes a love interest for Peter but is primarily known for being the personal secretary for J. Jonah Jameson at The Daily Bugle.
Evans' Cap returns in a Detention video as well...
Aaron Davis' nephew is actually none other than Miles Morales, the Spider-Man who succeeded Peter Parker in the role following his death in the Ultimate Comics universe.
Tough to make out, but the license plate on the car reads "SM2-0565," in reference to The Amazing Spider-Man #2 being released in May of 1965.
Kenneth Choi returns to the film playing Principal Morita, the grandson of his character Jim Morita from Captain America: The First Avenger. He even has a photo of him and The Howling Commandos in his office.
Actor Bokeem Woodbine appeares as Herman Schultz, the actual Shocker from Spider-Man comic and he's got the yellow sleeves to prove it.
In the film, this sequence is set up as Tony is preparing to move some items to a storage facility "up state," however some of the contents include equipment that are critical to the final act of Avengers: Infinity War. Could Marvel have been setting up the arrival of the new Cap SHIELD and the return of the Hulkbuster as far back as Homecoming? It is all connected after all.
The sequence of Spider-Man lifting the rubble off himself literally comes from a page in The Amazing Spider-Man #33.
Though technically not Mary Jane, Zendaya's Michelle reveals at the end of the film that she also goes by "MJ," setting her up to be the main love interest for Peter moving forward.
Tony reveals a new Spidey suit he created for Peter at the end of the film, though it appears a little different from its comic book basis.
Happy's reference to holding onto the engagement ring for Tony since 2008 is a reference to the year the first Iron Man film was released.
Though the credits reveal Michael Mando played Mac Gargan in the film, it's not til the mid-credits scene that we get a good look at his Scorpion tattoo, referencing his initial transformation into the super villain The Scorpion.
The post-credit scene of Homecoming sees Evans appear once again, offering us all a lesson in patience.