input question: To clean rust stains off of the bath tub.

output answer: Use half a grapefruit and salt. Sprinkle about a 1/4 cup of kosher salt on a halved grapefruit.

input question: Homemade weed killer

output answer: a gallon of vinegar, a cup of salt or Borax, and a tablespoon of dish soap. To apply, use a spray bottle where you can toggle the nozzle between a spray or a stream.

input question: How do you fill a cupcake with icing?

output answer:
Hollow out the middle of the cupcake with a small spoon until about halfway down the cupcake. Fill a piping bag with your chosen icing and pipe the icing into the empty hole in each the middle of each cupcake.