Yes, this is the thread for making up your own personal entries for the infinite alternate realities from Spiderverse.
So, my first idea: spider-Gwen has noticed a universe that the Inheritors have been staying away from so goes to figure out why. She swings around NYC for a while, quickly notices that this world's Spider-Man is dead. He was apparently killed by one of the Inheritors and now they're avoiding this world since it has no Spider-totems. But while she's swinging around, she sees a woman in a costume she doesn't recognize flying toward her on a Goblin Glider. She quickly reacts and gets into a fight.... then mid-fight she realizes that the person on the Goblin Glider is a wearing a police badge... with the name Stacy. then freezes in shock just long enough to get zapped unconscious by a finger blast.
Gwen wakes up to find herself in a police station... with handcuffs designed to hold Spider-People. She hears a voice in the hall outside the room say "Any idea why she looks so much like you?" Right about that time the door opened, and she realizes her mask is on the table in front of her. Then she sees the woman who was on the Goblin Glider earlier walk in. "Pretty sure this is an alternate version of my mother, but I have no idea why she's in a Spider-costume."
Hehe, just an idea I had for the start of a story.