Wheelchair cup holder support

I made this for a lady who had a wheelchair and wanted a cup holder attached to the arm rest. I'm not sure about the brand of wheelchair, but I made this, just a long 'anchor' with a ball at the end which she attached this to: https://www.amazon.com/FPN-Adapter-Compatible-5-5-Middle/dp/B0DM8L3W1K and then had a universal cup holder on the other end of the ball joint clip piece. See picture.

I printed it on it's side with supports

The cup holder is this: https://www.thingiverse.com/thing:3431686