Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:5807785.

This is a super-basic minimalist Key Holder / Key Organizer that i designed and have been using for the last year. I know there are many choices available, but i feel like this one has two great selling points:

1. Its as thin and small as i felt i could design it to hold multiple house and smaller keys and remain strong. It takes up the least amount of pocket-space while being strong enough for daily use...and i have been for at least a year.
2. It attaches to your key ring with a metal D-ring that's positively attached to your hardware and keys (not a printed loop that could break more easily) that is also easy to source.

I think its beautify simple and easy to print well.

The Hardware: 2x M3 machine screws - strong, but small enough to fit a wide variety of keys, the length is dependent on the number of keys, M3x16 fit 8 keys on mine. 2x M3 nut (locking or standard) (keyholder v4.1_Side 2 - M3 Nut.stl) Or - 2x M3x4x5 Heat set thread inserts (keyholder v4.1_Side 2 - Thread Insert.stl) 1x D-Ring Hangar - these are in the small hardware section of many stores, they are for attaching to the back of a painting or picture frame or from amazon