I’ve purchased two USB-PD charger bricks in recent years. They’re both 18W & have 2 x USB-A ports & 1 x USB-C port.
One’s in the kitchen, (more for the AirPods Pro), for quicker than average charging when needed [USB-C] & one‘s in the daily-driven vehicle [USB-A], used every day (whilst using Maps, streaming, calls etc.). USB-A is enough to keep the phone charged for a work day.
Once I get the iPhone 13, I’ll replace the USB-A cable in the vehicle with the USB-C cable & I’ll have faster charging in the vehicle as I do at home.
18W max is enough, & these chargers didn’t cost much (Anko brand, from Kmart).
I also have a wireless charger (same brand) used with Apple’s 5W brick, used to charge the iPhone over night.
My iPhone X is at 93% after nearly 4 years of use.