I have a personal rule that in order to get a tip you must do something (anything really) that is not simply giving or dispensing me an object that I paid for o

I have a personal rule that in order to get a tip you must do something (anything really) that is not simply giving or dispensing me an object that I paid for otherwise. If someone cooked or baked it or brewed it or pulled a shot or whatever great I’ll leave a tip. If it’s just handing me something or pouring into an cup and taking my money I have no problem hitting no tip.