I keep a tote with glass cleaner, a first aid kit, a pair of gloves, paper towels, paper shipping forms, international shipping bags, a few extra bottles of water, a Gatorade, some old granola bars I should check the exp date on, an old rain jacket with some holes in it, rolaids, gold bond butt powder, a roll of toilet paper ... Hmm what else I can't remember.
Oh yeah a tape gun. I have to hide it in the to plastic bin with a lid so the preload sup stops stealing it out of my tote, I also use the tote. Lol actually I think I have three tape guns cause I got really sick and tired of the gosh darn part time sups stealing my tape gun when I forget to hide it in my plastic bin.
I also have a winter jacket and rain jacket I hang on my DR release bags, plus another winter jacket I stuff in with my bin and tote (for my yearly driver helper). Then I keep some more paper towels out, along with more rolaids, a flashlight, info notices, pens, and a nice sharp five inch long "tool" in case the next crazy hobbo who climbs into my truck when I'm stopped by the hobo village doesn't just want a soda from my lunch bag.