As we find ourselves in the middle of the Christmas Season (yes, the Christmas Season - not the generic 'holiday'), my brain leaks some random thoughts. I'll add from time to time, so check back for the latest waste of electrons ....
You see them everywhere. The Salvation Army kettle folks. The gut reaction to seeing one of these people is to try and manuever yourself as far away from them as possible, trying to remain invisible to them as you enter or exit the store. The alternative is to carry a large wad of singles, so you can put a dollar (wadded up to make it look like several) into each kettle that you pass.
These folks spend hours in the weather, ringing those darn little bells. Some of them are paid (a little), but most are volunteers. Don't walk around them. Don't try to sneak by without them noticing you. Walk right into/out of the store as you would normally. Look at the person in the eye, smile, and give them a greeting.
I've never rode herd on a kettle, but I believe that if I did, I would certainly prefer that someone be pleasant towards me than to try and act as if I wasn't there.
If you transgress against someone in your vehicle (cut them off unintentionally, change lanes without looking, etc.), and they honk their horn at you, don't flip them off. Raise your hand in recognition that you have done something wrong. If they can see your face, just mouth the words 'I'm sorry'. You'd be surprised at how many of those people will smile at you, wave back, and say it's OK.
If you are in a parking lot, walking to your car, please don't walk down the middle in complete ignorance of everyone around you and the traffic problems you are creating. Yes, you may have the right of way in a parking lot, but that isn't going to be of much help to you if you are squashed beneath a pickup truck.
For God's sake, if you use a buggy to carry your items out to your vehicle, make sure you put that buggy into a cart corral, or take it back inside. Leaving it there to wander around and damage other shoppers' vehicles is one of the most hateful, self-centered, uncaring, ignorant, heinous, arrogant, stupid asshole things you can do.