Some places of my rooms have no power connection so i had to put power cables onto the floor to reach my electric gadgets. Poorly power cables on the floor always look improvised and my robotic vacuum cleaner had some trouble to clean the corners.
Thanks to achilleuss for his design "Cable clip Flash" http://www.thingiverse.com/thing:900909
this has inspired my design for my power cable wall mount.
This clip is designed for power cables with the diameter of 8mm (+-0,2mm should not be an problem).
See my blog: http://konkludenz.de/