Technically it's a flower frog converted to another use. A flower frog is a device used to help arrange flowers. For stitchers, they're used to store our embroidery scissor collections. Hence the name "scissor frog".
So why are they called flower frogs? Online research reveals a patent was issued for this "invention" in the 1940's. The patent listed this was a holder of flowers and sat in water like a frog. The name "flower frog" stuck. Some articles state flower frogs date back to the 1600's.
Frogs such as the Japanese Kenzan, are made of metal with little pins that hold the stems in place, and fit into a vase or bowl.
Other designs use a number of holes or guides that stems could be fit through for arranging.
Many types of flower frogs are art pieces with holes for flower stems and a container for holding water.
I had an empty one in my previous blog entry. This is the same one filled with my scissors:
Notice I also have my seam ripper in it, along with a needle-puller.
Do you have a scissor frog? If so, let me know... I'd love to see.