Here’s my take on a basic frame for a Qi Wireless charging disk. I wanted something that would allow me to place my phone down correctly each time, so this is just larger than my Samsung S23 Ultra (3.075"x 6.433" or 78.1mm x 163.4mm) phone, and you push it against the top stopper.
I’ve been using the same 3-coil charging pad since Oct 2015. The design in the middle is slightly raised and rubberized. Very tolerant of placement. Used with iPhone since before iPhone had built-in wireless charging (using external receivers that fit inside the case.) The exact one I have is no longer available, but similar are.
I have several others that I picked up for travel, use in other locations, etc. I pulled one apart to build into a more attractive case made with the GF, but never finished that project as you never see the thing anyway.