I also love minimal stuff in my pockets.

In addition to the phone wallet case, I installed electronic locks on my home, so I could stop carrying keys around.

On a similar note I can recommend a key case. I have a model that is a leather pouch with a zipper and a small key chain inside (I think I tried one with hooks before but the hooks broke quickly). Much more comfortable than having keys in my pocket. No more holes either.

Link? I'm curious to see what yours looks like.