FiddleStick
From ropewiki.com
The FiddleStick is a Toggle-Type releasable and retrievable advanced anchoring device designed with input from several canyoneers and sold by Imlay Canyon Gear. FiddleSticking is a ghosting technique as in normal use it leaves no artifacts behind.
History
The FiddleStick was developed by Tom Jones and friends starting in March 2011. Many people contributed to developing the design to the point that it could be released to the public in March 2013.
Usage
Use of the FiddleStick is explained in a Tech Tip on the CanyoneeringUSA website [1].