This is the (almost not really ultimate) phone and watch holder. It fits the Samusng 23 Ultra with a case on it, and most Samsung smart watch models (assuming you have the latch model, not a single band). Everything is press-fit into place, even the cables.

Yes, I realize I can route the cables downward instead of over the top, and when I have the motivation and filament, I'll fix that. There are slots on the bottom for magnets, and small clips on the flat stand to clip cables into. Pretty basic. 

Cables and phone charger used:

https://www.aliexpress.com/item/1005007239814368.html? (black, without cable)

https://www.aliexpress.com/item/1005004755289582.html? (2m, grey, although it doesn't really matter. This one fits into the slot by the charger)

EDIT: Fixed the phone charger so the cables are routed underneath the device, and then pop up through the base (just look at the model to understand, and made the stand for the phone centered on the charger… yeah, don't know how that happened. But it is what I consider a final product (save for some nice holes for decoration, but that's too much work)