this is a remix of the OnePlus watch 2 charger stand (linked below), i loved the original design but it was a pain in the butt to get the charger out, so i simply added a hole to the back so you can push the charger out whenever you need to, it is a little light so maybe do more infill if you feel the need to but it works for me because i use a generic longer charger than the short factory cable. there is no support needed, you will however need to print it on its side, other than that though i love the creators design and i hope this remix helps out some other people like it has myself.
https://www.myminifactory.com/object/3d-print-oneplus-watch-2-stand-365413