One great Peter Parker Lip Sync Battle fanfiction could be where he uses his spider - like agility to create amazing choreography during his performance. Maybe he chooses a really energetic song and surprises everyone with his moves.
A popular theme is Peter using his spider - powers in creative ways during the battle. For example, swinging from the ceiling to add a dramatic effect to his performance.
A third preference could be his excitement about becoming a father in the fanfiction. He could be seen shopping for baby clothes way in advance, daydreaming about what the baby will be like, and sharing his joy with his friends and family.