Printable Binabo & Extensions

I got my Binabo set yesterday and I really love this product. It's a great construction toy of amazing quality. But of course I had to make it printable to extend it.

###Parts
####Binabo Clone
This approximates an original Binabo with some compromises made for printability and programmer sanity.
####Binabo Connectors
This small part was really only made to optimize the tolerances of the connectors but there might be some use for it to terminate open connections in proper end points.
####Binabo Hex
This new part with 3 connections was pretty obvious and fits well into the system. Do you have ideas for other new parts?

###Material
The original Binabo is made from Arboblend, a lignin based material. It can be bent easily, won't break and returns to it's original form. For printed pieces to work really well, they would have to be made from a similar material. While I have found lignin based 3D printing filaments, I do not have them for testing and am not sure about their features.

When you combine original Binabo with a few PLA printed parts, there is no real problem, as the original pieces can do most of the bending. :)

###Buy the original!
While printing extensions is fun, you probably cannot come close to the quality of the original. Also, these creators deserve some support for their choice of sustainable materials and a sustainable business concept. So get a set or two of original Binabos and then start printing extensions!
https://www.tictoys.de/de/produkte/binabo-ball/
UK: https://yesbebe.co.uk/714-tictoys/

###Other Binabo Things
Combine your Lego Duplo with Binabo. It works really well together!