I use a plastic tackle box, not a huge one. I toss in, ear muffs, ammo, any sort of tool I might need for sight adjustments, a roll of masking tape to cover holes in targets and maybe tacks to hold up the target on the backing board. Extra magazines if an auto pistol or rifle. I wear glasses but if you do not toss in some impact rated glasses if not special shooting glasses. Make sure anyone going with you has earmuffs or plugs also, and glasses. I toss stuff in the trunk for the outdoor range including targets and some sort of rest for rifles. Other than that, if you are going to an outdoor range, a hat is nice to shade the eyes and maybe something cold like bottled water. Forget food. Maybe a rag to wipe your hands if you get firing residue on them from handling the gun or maybe to wipe off the gun if you want for the trip home. Make it a clean rag. I once cut the crap out of my hand at the range really bad and had to wrap a dirty red rag on it for the drive home. Oh and your guns should obviously have some sort of case, instead of banging around loose in the trunk.