One thing I would do is use my water bending powers to open a house painting business (interior/exterior and cabinets). I would promise completely perfect results in 1 day or less with the caveat that the customer cannot be home for 'safety' reasons. Oh! I could partner with an air bender and we could have places completely painted, not a drop spilled, and completely dry in 1 hour or less. Without even over charging people we could do so much volume we'd make bank!
I may or may not be painting right now and hating reality.