"dirtwork" construction. Get yerself an excavator, dumptruck, and trailer. The "swimming pool digger" kit. Then hire out to do all the jobs that that set of gea

"dirtwork" construction. Get yerself an excavator, dumptruck, and trailer. The "swimming pool digger" kit. Then hire out to do all the jobs that that set of gear can do, which is a lot. Most of the work involved will be operating the equipment, which is not killing hard but not sedentary, and every job will be different enough to engage your brain.