Chrony, log book, multi tool, a couple tipods, spotting scope, binoculars, portable cleaning kit. And since I don't shoot at public ranges, but rather at a nice private little public land location, I also bring my table to shoot off of, sand bags, and even a single stage press to adjust OAL's. And if I'm working a particular load up, I will bring the whole shabang, scale, powder, calipers, and other necessary components to do some load developement with. I know this might seem extreme to some, but I absolutely enjoy reloading and shooting as a combined hobby.
GS