Just like in a kitchen, there are a lot of gimmicky bar tools that have one application or are overly complicated and not worth the space they take up on your bar. Here are some necessary tools that are required for any bartender:

Two-Piece Shaker This is simply two stainless steel cups, one larger than the other, that fit together at their openings, so you can mix your cocktails by shaking. You can also use the larger of the two cups to mix a cocktail by stirring.

Hawthorne Strainer Used with the two-piece shaker, this strainer fits snugly in the opening to separate the liquid from the ice used to chill the cocktail that was shaken or stirred.