1. A coffee mug: A classic! Especially if she's a lipstick enthusiast and loves a strong morning brew.
2. A phone screen: We all know how often we hold our phones to our faces, and a lipstick smudge is a telltale sign.
3. A napkin: A simple yet common place to leave a lipstick mark, especially during a meal or a quick touch-up.
4. A mirror: A reminder of a quick lipstick check or a moment of self-admiration.
5. A pet's fur: A playful touch that leaves a mark on a furry friend.
6. A book: A cozy moment of reading, perhaps with a glass of wine, can lead to a lipstick mark on the page.