I have a wireless charger for my iPhone 11 that works great… when it is aligned properly. After too many nights thinking my phone was charging and waking up to a dead phone, I had to come up with a solution. 

This holds the wireless charging puck in place and aligns the phone on it. With a case on, there is just enough room to make it easy to place the phone while ensuring alignment. It would work without a case as well, but will have more room so you'd need to verify alignment. The weight of the charger also helps to keep it in place. There are also decorative holes in the bottom to prevent accumulation of anything in the tray and minimize filament usage.

I printed this on my Elegoo Neptune 4 Pro with a 0.4mm nozzle and 0.2mm layer height.