I've a vague notion that one day I would make a cloud service where people send in old iPhone 4/5/6, old iPads and various common old/unused hardware. You would

I've a vague notion that one day I would make a cloud service where people send in old iPhone 4/5/6, old iPads and various common old/unused hardware. You would get (lots) of credits for sending in your old devices. Not sure it would be successful but it would be fun to make - and fun to use for cheap little projects.