2 bottles of water, digital volt meter, wad of ty-wraps, cap, socket set, fuse assortment, spare headlight bulb, rescue tape, t-paper, 10-in-1 screwdriver, 3 small coils of red, green and black 14 ga. wire, butt splice connectors and crimper, 4 spark plugs, either a clear face shield for my helmet or the tinted one depending on the weather, a spare pair of gloves and rain suit. That's about all I can fit in the trunk. I usually keep the left side bag empty so it can hold my laptop or a 12 pack of beer from the store. Right bag has either my warm weather jacket or my cold weather jacket depending on which one I'm not wearing at the time.