I have this really strange head-cannon that Tony unwittingly gets invention ideas from Peter.
Like, Peter is over at the New Avenger’s facility one day and goes to turn on his bluetooth headphones. But they immediately die. So he gets pissy.
Peter: Oh my god, are you serious!?
Tony: What’s up, squirt?
Peter: My headphones are dead. Ugh, they’re going to take like, an hour to charge. I seriously need insta-charge for these things.
And of course Tony is just like…
Tony: …I can make that. Easy.
And then he ends up making the product and patenting it in like, a day. But he doesn’t care about the revenue it brings in so he tells Pepper to throw it in a savings account for Peter’s college.
Avengers AU – If Tony was Peter’s biological father
Tony is super protective of his son. And Peter, inspired by his dad, becomes Spiderman anyway (his dad and his Uncle Rhodey figure him out in a second though).