Currently EDC a basic chrome Fisher Space Pen. I usually drop both a Fenix E05 and the Space Pen in my pants pocket. The Fenix is probably scratching the heck out of the Space Pen, but I don't expect anything I EDC to remain pristine.

I'm still looking for a small notebook (maybe like 2"x3") that can withstand riding in a pants pocket without getting destroyed. I've been toying with the idea of taking those blank cards you can use for flash cards (they come in different sizes) and putting a small number of them in something like a business card holder so they don't get bent or crumpled up in my pants pocket.