Hm, adding to my own post, but...
Not really useful for leatherwork for me yet, but when I sew I have magnetic strips screwed to the back of my bookcase. They hold my scissors, rotary, etc, and when I thread a needle, it goes there and stays threaded and untangled while I work and it's literally at eye level. I don't know my most used leatherwork tools yet, so not really something I'd do there, but it might be useful for someone else.