Permobil Chair Adapter (With Add-ons)

This is an adapter for Permobil chairs. 

The photo with the rail (white part) is an old version. New version has holes from beneath so you can screw the rail in place to reduce wobble. 

The blue part is optional and opens accessibility to new parts that using the Ball and Socket System like this:

https://www.thingiverse.com/thing:2069128

You change the green part with others and create a Phone Stand, Cup Holder and anything else you can think of. 

I'm looking forward to messages telling me what else should I add. And also what should I improve. 

*Cup Holder is on the way.*

Thanks I hope you find this useful.