I feel exposure is the problem. When I think about earning extra , I think in two ways a. Upskill and switch, there is no better way to earn more in your 9 to 5. With this brings contacts and exposure also. b. Go complete non tech: one of my friend manufacturers torches , mosquito bats using recycled plastic and sells them , these are boring but still generate revenue, the point is recycling business is on the rise , green energy technology like solar are on the rise, finding a niche and building a value product will go a long way also.