I took the companion cube with hearts, and made a keychain out of it, as requested through our Etsy.
Check out our Etsy for all of our 3D printed awesomeness!
The size of the cube is 3cm per side.
Print with a bit of support, paint it if you'd like, and attach a key ring. I suggest a thin keychain, it seems like the thicker ones will leave it prone to breaking.
The OpenSCAD loads in the STL, and then you position the keychain loop. Might be useful in making other keychains.
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.