Takes Metta.UK's design, and adds a trough for a TRRS 4-Pole extension cable to use the swipe reader.

Square_Contactless_Power_Stand_r2.stl positions the card swipe in a diagonal position, matching the cant of the stand, where Square_Contactless_Power_Stand_r3.stl puts the reader horizontal to the surface it's on.

I used this 6-foot (2m) extension cable, but a shorter one would do: https://www.amazon.com/gp/product/B07QZYLHQ4/.

Make sure you get a 4-pole cable, one that matches the Square Swipe reader. The cable trough is 9mm wide, so most extension cables should fit.

Warning, this was cobbled together with the now unsupported Netfabb 2021. I am not a designer professionally, let alone as a hobby, but I've figured out just enough to eek by and get the features I want mashed together.