flex cable is around my neck with magnetic mount to hold my switchlite - cheap 20ish dollar controller from Amazon - I wear this everywhere, walking around, sitting on couch, laying in bed, to hold controller where I can see it decently (bad nearsightedness). I freakin' love it, so thought I'd share. The flex shaft holder I'm using is this one: https://www.amazon.com/gp/product/B07ZSFVDKZ/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1
I currently use both the magnetic and clamping versions of this with phones and the Nintendo Switch and it works ok, but I'd like something taller for the surface:
https://www.amazon.com/B-Land-Magnetic-Gooseneck-Universal-Compatible/dp/B07ZSFVDKZ