What Cyber Monday social proof should I show?

As an e-commerce merchant preparing for Cyber Monday, I'm looking to maximize conversions by strategically displaying social proof that builds trust and urgency. I want to understand the most effective types of social proof to showcase during this high-stakes shopping event, considering the massive online competition and short attention spans of holiday shoppers. My goal is to create compelling visual cues that demonstrate product popularity, customer satisfaction, and create a sense of FOMO (fear of missing out) for potential buyers.