I saw some of the other charging docks on here for my mouse. But none of them fit what I was looking for so I decided to make my own. Mad props to Spotech though for posted the wiring for the mouse though and saving me time. https://www.thingiverse.com/thing:5388370 Go check their make for the picture I used to reference my polarity on.

Okay! Build instructions.

Needed hardware.
Random bits of wire, choose your favorite flavor. 2
m310 ferrous screws. Make sure they're magnetic! 2
m3 threaded inserts 2
USB C female connector jack. I used this 4 pin. https://www.aliexpress.com/item/1005005461853645.html *1

Other ports might work too, but this is what I had on hand.

1.) Print the puck the same way it loads in. The bottom facing the build plate. Tree supports, and 15% infill.

2.) Print the mouse rest piece with the top facing up. No supports.

3.) Print the stand with the bottom touching the build plate. Enable tree supports and set overhang to 80 degrees. This will prevent it from trying to support the screw holes.

4.) Take the magnets out of the stock puck for your mouse. They will slide out and are just held in with some silicone. Take the new puck and slide the magnets into the holes.

5.) Insert the threaded inserts from the back into the rest.

6.) Thread the wires through the hole at the back and out the holes on the sides into the holes for the screwdriver. Strip the ends and tin them, then wrap them around the screws. Feed the screw through the holes and screw them into the inserts in the back of the rest. They should stick out the right distance to make contact with the magnets on the puck.

7.) Pull back most of the slack. But not all of it. Trust me, you'll want a little slack for the next part.

8.) Cut the wires to length. Get them as close as you can comfortably solder them.

9.) Solder the wires to the usb C connector and then use a pair of tweezers to pull the slack back into the hole for the screw driver until the connector is flush.

10.) CHECK THE POLARITY!!! If you're looking at the top of the dock the right should be positive, and the left is negative. Please see my picture as a reference.