I dont carry much with me anymore, theres just no room. I have a jug of water in the bed due to a leaky radiator, flashlight, sometimes I have a knife, and cookies in the glove box...
When I had my Long bed 91 Ranger with the the bed box I had a few bottles of water in there, an ax, a tow strap, a 4 way, a shovel, rags, assorted nuts and bolts at the bottom of the box, an aluminum bat filled with cement, bungee cords, Rope, 2 buckets, a 1/4 trowel, 1/2 trowel, a margin trowel, 2 grout floats, a box cutter... i think thats it lol and of course i had my trusty Mag light in the cab, a knife, a tire iron under the drivers seat, and a 4 way screw driver.