I have been reading these forums for a few months now and this weekend I decided to review what I carry in our cars. My wife and I live in the Phoenix metro area, and other than (all too) rare camping trips, we are always in the metro area. I prefer to keep my kits somewhat modular, so I can add groups of things easily. The list below mostly reflects things I have found a need for often enough in the past that I didn't want to not have, plus some things that just make life a bit easier.

I'd appreciate any feedback on changes or additions:

Stored in trunk:
Car Toolkit
* Large & small vise grips
* channel-lock, needle nose, and slip joint pliers
* wire cutters
* utility knife with spare blades
* 16' tape measure
* Screwdriver set (8 total, various sizes)
* 6" nail puller
* Allen Wrench (SAE & Metric)
* Driver bit set with various bits
* socket set (1/4 and 3/8 sae & metric
* Jumper cables
* leather gloves
* 8x8 tarp
* AA LED flashlight
* 16oz claw hammer
* mini hack saw
* funnel

Consumables:
* 2 1/2 gallon water jug
* duct tape
* #8 steel wire
* hose clamps, various sizes
* wire ties
* fix-a-flat
* 50' 550 paracord

Clothing
* Jeans
* tennis shoes
* socks (2pr)
* tshirt (2)
* hooded zip up sweatshirt
* hat

Stored in passenger compartment:
* 3D LEG mag light
* Petzl TIKKINA headlamp
* AA LED mag light
* SOG Pentagon fixed blade knife
* Utility shears (paramedic type)
* Nalgene water bottle
* Hand towel (12x18)
* compass
* matches, lighter, & firestarter
* Fox 40 whistle
* travel sewing kit

* First Aid Kit
**Tweezers
**Assorted band aids
**4x4 gauze pads
**Gauze roll
**Medical tape
**Advil
**Aspirin
**Scalpel blades
**Disinfectant wipes
**Antiseptic cream
**Latex gloves
**Antacid tablets
**Nail clippers & scissors
**Allergy pills

*Personal items
**Toothbrush
**toothpaste
**dental floss
**Sunscreen lotion
**lip balm
**Insect repellent (small vial of REI jungle juice)
**disposable razor
**3 days worth daily prescription meds

In addition, my EDC consists of:
Leatherman Juice multitool
Bandanna
Handkerchief
Photon II LED light
Cell phone
Mini Fox Whistle
2GB USB Jump drive
Pill vial with 1 days worth of meds

I have not yet assembled BOB's for us - that will be happening soon. I will also make additional 'road trip' kits to add to the vehicles when we head out of town. Keep in mind I do live in the Phoenix area, and during the summer, the inside of a closed car can easily reach 140. The water I carry is the 2.5 gallon jug of Arrowhead and I replace it each month.