Dead Man's Line by Verdant Weapons
The second offering from Verdant Weapons is the Dead Man's Line, a rugged aluminum noise shaker box with two springs of different tension bolted to it, and a standard 1/4" output, with small black stones and ball bearings inside.
Due to the shape of this item, they will ship separately in most cases, so shipping isn't combined outside of the USA.
Video shows an earlier prototype of the unit, through two classic distortion pedals. If you're interested in this variation or a custom order, please get in touch.