That's the guy I buy ALL my 3d printed parts from! how funny. I have never seen those power brick mounts on his site or ebay and have been following him for years... hmm. Did he make them custom for you? Are they all the same size?I got these from and fellow who does 3d printed parts, he does normal and custom work, everything came from him, here is the link
Asterina Magnetic Scooper | Printed3D.Parts
This is an Asterina Magnetic Scooper. It is designed to work like a glass cleaner but for Asterina starfish! Just slide it around and it will scoop all the stars in the container. Then simply let dry, slide the cap open and discard the contents. It has a slide-removable top and a chamfered edge toprinted3d.parts