I whipped up this stand for my OnePlus 9 Pro so I can have it charging while I'm sitting at my computer. I sourced the charging pad from AliExpress (about $5 US). There's a cutout in the “shelf” to accommodate the magnetic charger plug that I have in the phone for when I'm not near a stand. The included “plug” should press-fit into the cavity on the back to keep everything secured. 


Charging pad: https://www.aliexpress.us/item/3256805303256970.html?spm=a2g0o.order_list.order_list_main.5.65a41802aSwt4Y&gatewayAdapt=glo2usa


Edit: Added the Fusion 3D file.