Gras lampen is the Dutch word for "grassy lamps." They are a type of decorative lamp that is typically made of a cloth shade with a lightbulb inside. The lightbulb is covered in plastic grass, which can be changed as needed.

Grass lampen were originally designed by Dutch artists and designers who wanted to create an inexpensive, low-tech alternative to high-tech lighting solutions. Grass lampen have been used in many different countries, such as France and Belgium, where they are known as "jardinières."

The lamps are often used outdoors near plants or trees to provide natural lighting and reduce the need for artificial light sources.