hmmm... I think your idea of "menial" might need some help...
Last year at this time I was working a temp job at an Army Base construction site. I made just over $23 an hour to sweep, dig, carry, and do basic physical labor...
When I first got there I was asked to help carry some things and then sweep a large unfinished area. When I finished I was told it was amazing that I knew how to sweep as the last several workers there had not know how. This astounded me, as I had never considered sweeping a skill. I know now I am wrong, after sweeping up the red floor sweep compound spread by several others...
Have you ever met a plumber? Or are you talking about some guy at roto-rooter who cleans pipes? No matter where you live becoming a plumber is quite a feet...
I manage my energy strangely... like quarks... lol!