Here is an update for one of my creations, WCK 7 : Wearable chain keyring 7.
This is an example of the DIY maker movement in action. WCK 7 is made up of industrial goods connected to each other. There are 10 pieces that make up this unique and useful product. In the video below, you can also see the neodymium magnet that's connected to a hexagonal nut. The keyring can be placed onto this end piece as you can see in the photo below.