What bar-specific tools do you REALLY need to get started? I narrow it down to three (with a fourth bonus tool if you're making some specific kinds of drinks). I'll also mention some of the make-it-work common things you might already have in your kitchen that can be substituted in a pinch.

We'll also discuss glassware and my suggestions for places to hunt it down on a budget, as well as suggesting a minimal, pared-down glassware set that might be good to start with. (Although a single rocks glass will do you just fine if you don't want to expand into the fancy stuff).