You know kids and their boundless energy. Most of them love to run up and down staircases, but doing so with poor lighting can be dangerous - hence the Sound-Activated LED Spotlights.

Mount these battery-operated lights along a stairwell, in a closet, outside your side door…wherever you need some light but don’t need the hassle of electrical work. Loud or sharp sound will turn the four bright LED lights on; they’ll turn off automatically 10 seconds after last sound heard. Manual on/off option. Pivoting bracket directs the light where you need it. Weather-resistant for outdoor use.

These babies will cost $9.99 for a set of two. Pretty cheap considering the potential pitfalls you can avoid.