Extension and pins

1. Changed the key holders from adding them to your keychain to keeping them in the keyholder and hang the keys instead. 2 sizes available
2. Added an extension with 3 honey combs: 1 see through and 1 with a hole for a screw. Glued the 2 pieces together using PVC U glue (the one used for PVC drain pipes)

Original work here: https://www.thingiverse.com/thing:4775253/makes

Scaling:
Scaled down the keyholder to 70% and the pins to 68.5% as suggested in the original post.