A quick walk-around that can save a dispute later.
Before leaving the lot, walk around the car and note any existing scratches, dents, or interior wear, comparing what you see against the rental agreement's condition notes. Taking dated photos or a short video from multiple angles creates a record that protects you if a dispute comes up at return.
Check that spare tire, jack, and any legally required equipment like a warning triangle or reflective vest are actually present, not just listed on paper.