You can use vinegar as a final rinse on your hair to help remove the hardened crystals which can contribute to poor blood circulation in the scalp.
And as many of you know, vinegar is a great household cleaning product. White vinegar is very inexpensive, and is useful for cleaning just about anything and anywhere either straight as is, or diluted up to 50% with water. Spiders and ants dislike the smell of vinegar, so a final spritz with it in corners of your rooms, around windows and screens, and on your counter tops will discourage them. The odor evaporates rapidly.
Just google "white vinegar household uses" or something similar to find lots of examples. You tube also has many many short videos on uses of vinegar around the house.