I use a wireless walnut charger that I bought on Etsy. It works well, but it's too easy for my cat to slide it off. I'm thinking of switching to one that holds the phone upright.
I had this for my iPhone XS, while it worked great, it does NOT charge the 11 Pro Max while the Apple Leather case is on, for some reason (in vertical). If I place the phone horizontally, it does charge but it's made me very cautious using it and I have just used the fast charger/lighting cable since I got the phone.
I just bought this one, hoping it works well. I’ve heard that wireless charging can be slow, but this is only for bedside charging while I sleep anyway.