Below is a complete list for the locations of all minikits in Chapter 07: Earth's Mightiest.
Part A MInikits
Minikit #01: Once you're on the Leviathan with Hulk and Thor, you must find and destroy a total of six blue lights there to get this collectible.
Minikit #02: Have someone with scanning abilities check the section just to the left of the green handle. Then move the revealed panel with telekinesis.
Minikit #03: You must smash the silver cage at the front of Leviathan to claim this collectible.
Part B MInikits
Minikit #04: This one is hidden behind a cracked wall off to the left of the area.
Minikit #05: Send a flight-capable character to get this collectible on top of the elevator shaft.
Minikit #06: Use Hawkeye to break the glass window and go inside to find this piece waiting off to the right.
Part C MInikits
Minikit #07: You must operate the same control above with a Hydra agent.
Minikit #08: Access the tech terminal in Tony's abode and hit the buttons to replicate the pattern shown on the picture.
Minikit #09: Have someone with a laser cut through the slats close to where Stan Lee was and use Captain America to activate the switch you find.
Minikit #10: Instead of picking up the scepter, go left first and make use of the handholds to scale down the building for this collectible.