whiteboard cleaning: You can use Air Freshener to clean a dry erase board that just won't erase (because the ink is very dried on) . Spray the board and wipe, it also helps "recondition" old dry erase boards.
Wash Towels in HOT water & a cup of Vinegar. Run again in HOT water with a half-cup of baking soda. That will strip your towels from all of that residue & mildew smell & will actually leave them feeling fluffy & smelling fresh.
Car upholstery Car-Seat-Before-and-After Make you DIY cleaner for the car upholsters using equal parts of club soda, dish soap and vinegar, scrub it with a brush and remove with a steam cleaner or shop vac.
The Best and Worst Methods of Cleaning Stove Drip Pans