GodingerDublin Cocktail Shaker
The best part is that it has a built-in strainer. So once you're done shaking, you can remove the small top and strain the liquid without having to worry about ice or other solids getting into your drink!
Since you won't have to reach for another tool, drink-making can be fast and efficient. The gorgeous stainless steel design and glass detail also make it a fantastic bar cart accessory.