[Q]: Objective: how to keep bacteria from forming in flower vases
[A]: add a bit of bleach to the water

[Q]: Objective: How to replace fabric from cushion on a chair.
[A]: Remove the cushion off of the chair. If there is staples on the bottom of the cushion, remove them with a knife. Using a new fabric, staple down the excess fabric on the cushion to the bottom using a staple gun.

[Q]: Objective: Deter slugs from garden.
[A]: Crush eggshells and scatter around garden.

[Q]: Objective: Nail polish only the top of a fingernail
[A]:
Cut a piece of adhesive tape to fit the lower half of the fingernail, stick tape to the fingernail, polish only the top part of the fingernail avoiding the tape