I have need to attach some notched things to a shelf.This thing is a UClip, similar to this set of things: http://www.thingiverse.com/thing:5208It has the standard Key on the edge of it, so that you can attach something, or a number of things to it by sliding the key into their notch.1) Print a few of these 2) Attach them to flat things 3) Slide notched things onto them 4) Rejoice!