Amazon has this Encased Magnetic iPhone Mount Compatible with MagSafe for just $9.59
when you use the coupon code: 40938SGH
The code also works for a few other products:
Encased Magnetic Holder Designed for MagSafe iPhone 12/13/14 Cases – $10.79 after coupon
Galvanox Wireless Charger – Compatible with Apple Watch/AirPods/iPhone Charger (Dual Sided) – $17.99 after coupon
https://www.amazon.com/gp/mpc/A2AG5ISXK7TJYN