I would be taking care of other people's gardens. I'd encourage them to let me build habitats for native wildlife. And doing work outside is just so relaxing.

And I would build an alarm clock app, that lets you set the alarm according to the weather. It would allow you to set up alarms for snow and black ice. That way you can clear your section of sidewalk and use alternative transportation options to get to work.

Or maybe I'd open a repair-shop. One that also allows people to do the work themselves with tools and instruction.