This was a plastic slinky I purchased at the local Dollar General store for about $1.00. This proves even senior citizens can enjoy a slinky. Perhaps in a different way than a five year old but I got my dollars worth out of it. (smile) Photographed with a Sony A7RII, 42.3 MP mirrorless camera and a Sony 90 mm MACRO F2.8 G OSS lens. Two light setup, 5600K. Shot on a black acrylic reflective tile. 2.5 seconds, F16, ISO 100, MANUAL MODE, (16) shot focus stack using a manual focusing rail. Helicon Focus to complete the stack into one final image.