I don't like hot drinks, hence I never do "coffees".. what else you got?
Inaddition, I hate ppl asking how my day is, as in: "hello how are you?". Retail staff are notorious for this.
I always respond with: "feeling crap, my mother just died last week". They have no response. If i wanted conversation, you'd be my friend, not a service provider
When I used to work retail in my uni days, I always said just a simple "hello" and the amount of times I got as a response was "good".
Although acknowledge that it is a conversation trigger if the staff member is remotely interested and bored with their work.
There is more to life than being really, really, really good looking