I was having trouble with a leaking sunroof on a Ford Focus. Common sense told me it was the seal around the window; however, a little research uncovered the existence of small drain holes under the roof in the front and back. Pouring water in the drain trays revealed the front drain was blocked.
How to clean the drain? A pipe-cleaner was too short. What would work as a tiny drain snake? As I was changing a string on an acoustic guitar it hit me — this A-string looks just like a miniature plumbing snake. It worked perfectly and saved hundreds of dollars in repair bills. Hmmm… maybe I should apply for a patent on the “guitar string plumbing snake“?