Simple clip/snap on mounting plate for this magsafe arm:
https://www.aliexpress.com/item/1005005189053692.html?spm=a2g0o.order_list.order_list_main.36.798a1802Fx2clV
I took the base of and mate the mounting plate to fit over the plastic cover on the P1P.
Most of the same type of models have a very similar joint, so you should be able to get away with a cheaper variant or just remix this to fit your needs.
Don't mind the super dusty phone :)
The author marked this model as their own original creation.