I work the to-go food counter at a relatively high-profile restaurant, and I can say for the amount of work I do, I deserve more tips.
Granted, if you come to me and order a dessert or something relatively inexpensive and/or easy to prepare that's one thing.
But a couple weeks ago, some bastard ordered 24 filet mignons TO GO. I had to spend about 30 minutes at the line expediting the order, packing them up, and preparing other elements of the order which totaled $698. The f00 who picked up the order tipped me exactly ZERO dollars.
But then again there are those who tip $5-6 on a $30 order which isn't too shabby.
Tips should be commensurate with the amount of work I do for YOUR particular order. No, I am not OWED tips but society dictates that tips should be left out of courtesy. A dollar, two dollars, or even the change from a bill is fine -- it's something and it adds up.
Truthfully I wouldn't even expect it if your order is routine. I'm just doing my job. However, there are people who insist on trying to order me around like they run the restaurant, or insist on getting boatloads of extra this and extra that at no additional charge or are just stupid or general nuisances, and they are obligated to tip just for being a burden to society.