"I made a gun rack for the bed of my pickup that held 10 long guns. Plus 3 or 4 in cases underneath the rack. A couple range bags stuffed with handguns..."
My neighbor host this very same type event on his farm, every Labor Day weekend. Strangely enough, he asks me to bring along "a few rifles people might like to try". Putting a dozen or so in cases, un-caseing them after a mile of hayfield, then wrapping everything back up is a pain. Maybe you could share your ideas?
Oh, as to the OP's question, I always take my current CCW, a .22 rimfire, and one of the N frames. Sometimes, I'll also bring out one that looks as if it's been idle just a bit too long. When I take rifles, there's usually a favored .22 LR, center-fire bolt gun, and an AR. The AR doesn't usually get much range time, as it serves Woodchuck Duty almost daily.