Not a story of how I found money, but how I saved money. I was cruising the web one evening more than a decade or so ago. I saw an offer for a second mortgage at a lower rate than my current mortgage. The offer also stated that they would go up around 80% of the homes value. This was less then was owed on the home, and the offer allowed you to use the money to pay off your current mortgage. As a lark, I went ahead and applied late that night, which was the final day of the offer.
I was approved. So, we managed to refi our home for the cost listed in the offer :
$10
I didn't find money, but I know I saved thousands.