Share your UO and/or judgments! See if you can actually come up with something that prompts some debate, other than vaccines. Mine isn't particularly controversial.
It is ridiculous to me when people buy stuff at farmers markets that clearly isn't local. If it is the same package of blueberries you could get at Super Target, why buy it from a person at a farmers market? Doesn't that kind of defeat the purpose of the farmers market i.e., buying local?