There have been some excellent suggestions made. WoW...
Well these might not be that helpful, but I've toyed with the ideas,,,
Online swimming or scuba diving lessons.
Online window washing, (recommended by WTBTS)
Online virtual reality dog walking.
I sympathize with you, we are currently going through some tough times, my wife is in nursing school with another year to go, and is trying to find job for the summer. Over 50 applications in less than 2 weeks, and no replies. She does have a nice camera, I thought the photos idea sounded great.