Q: Here is a goal: soldering iron

How would you accomplish this goal?

A: can engrave wood

Q: Here is a goal: To cool off an item faster when using ice,

How would you accomplish this goal?

A: add salt to the item when chilling it.

Q: Here is a goal: How to avoid staining skin with hair dye when dying hair

How would you accomplish this goal?

A:
Put a small amount of petroleum jelly around your hairline to prevent hair color from staining skin.