Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4916131.

A basic Joystick extension that snaps on top of factory controllers to give you better control and feels a little better in my hands. my thumbs dont seem to get stressed as much after long sessions of play time. used PLA at .2mm with supports for the under side and midsections. i wanted the top to be smooth as possible and it has a slight inward curvature(pocket) for ur thumbs to set in to help with control.