1. Prepare a plastic bottle and cut it with a knife. Put a balloon in the bottle, as shown in the picture below.

2. Stick the hole in the bottle cap and stick the small flashlight on the bottle cap. Tighten the bottle cap.

Night light is a kind of light used when sleeping at night or in dark conditions. People often use night lights to provide a sense of security for lighting, or to alleviate phobias (fear of darkness), especially among young children. Night lights also benefit the public by revealing the general layout of the room without turning on the headlights again, avoiding tripping over stairs, obstacles or pets, or marking emergency exits.

Some people who travel frequently will take nightlight with them and install it temporarily in guest rooms and bathrooms to avoid tripping or falling in unfamiliar night environment. Gerontology suggests using night lights to prevent falls, which may pose a threat to the elderly. The low cost of night light makes different decorative designs spread, some of which have superhero and fantasy designs, while others have the basic simplicity of small CDs.

Light sources and variants

The early electric nightlight used small white incandescent lamps or neon lights to provide light sources, which was much safer than using small naked candles. The neon version consumes less energy and has a long service life, but some users like the flickering tendency that others find annoying (reminiscent of candles).