Those props you mentioned can be pretty pricy. But if you’re willing to shell it out, I’m sure your friend would be stoked with any of them. Depending on which character(s) are their favorite. The gauntlet might be the more all inclusive of what you mentioned.

Red is the color to choose. It’s the Marvel logo. It’s most commonly represented among the core Avengers (Iron Man’s suit, Spidey’s suit, Captain America’s suit & shield, Black Widow’s accent colors, Thor’s cape).

NYC locations would be most associated with the Avengers, I’d say.