tools
A tool is any instrument or simple piece of equipment that you hold in your hands and use to do a particular kind of work. For example, spades, hammers, and knives are all tools.
I find the best tool for the purpose is a pair of shears.
我发现做这件事最好的工具是一把大剪刀。
You can refer to anything that you use for a particular purpose as a particular type of tool.
Writing is a good tool for expressing feelings.
写作是表达情感的一种好方法。