I had a friend who wanted to start a coin counting by mail business. The customer mails the coins in a flat rate package and then you count them and in exchange the people get a gift card to a local restaurant.

  • Dangerous-Meal8107@alien.topBEnglish
    1·
    1 year ago

    I had the air turbine idea in 8th grade! Once that was debunked, then I proposed adding a ‘floor’ of turbines to high rise buildings so they could generate their own electricity. To bad it wound make the buildings fall down. Lol…

    I did see an actual prototype product at a trade show which put little turbines in your water pipes and to generate electricity for you own home.

    I figured if it ever caught on then municipalities would ban them as they would be using more energy to pressurize the pipes properly.