All of these should be tools in the standard bartender/mixologist’s stable.
If you’re in need of keeping all of the items together in a quick-to-use multitool, the Bar10der seems to be right up your alley. Four different colors, stainless steel, and BPA-free plastic combine to form the Voltron of mix tools.
Do you even know how to use these tools? A corkscrew is clear, and a strainer makes sense. A knife is a knife, but what exactly is a jigger? How well do you know your mixing tools? Do you prefer “mixologist” or “bartender”?
Or do you just like drinks? The Bar10der might be laughable, but it’ll serve it’s purposes. Just don’t play around with it too much; it’s a bit sharp.