Find Lamp, Comb, Nail, Pill.

The nail is harder to detect because it is disguised within background lines or furniture details, making it easy for the brain to interpret it as part of the illustration rather than a separate object.

The most difficult item for most people is the pill. It is typically hidden near the bedside area and blended with nearby objects like a cup or surface detail, making it easy to overlook even after careful searching.

These puzzles work by taking advantage of how the brain prioritizes attention—focusing on larger, clearer shapes first while missing subtle details. Slowing down and scanning section by section is usually the best way to find everything.