A small business which my father can run

Hi Guys, My father is 65 years old and physically fit. I want to start a small business which doesn’t need more physical energy to run. Just to engage him so that he is at least occupied for 8 hours per day and not a loss making business. I enquired about starting a medicine distribution business but it looks like it needs more fund and huge competition is there. Any suggestion. Business location is Patna. TIA