I have some work to show! I'm very excited. While the pin still needs a little bit of work (My hammer is missing), I have it in the basic shape necessary. Apologies for the low quality of the picture. A better camera will be ours in the future, hopefully.
It doesn't look like too much here, so I'll show you a traced version I did.
The grey part is in the foreground, while the darker part is in the back. The little loop on the right side holds the longer grey part in place, and on the left side is a coil that gives it some springy action. once I have my hammer I can pin this to some cloth to show you how well it does its job.