I work in education now in what you would call a community college in America. If I was found 'tooled up' I'd probably be in trouble (though I did save the day for the vice-principal when she tore a dress strap and yours truly materialised a needle and thread (LOL). Nevertheless I sourced a really nice, discreet black cordura pouch that carries my PDA. Cunningly, I then bought another that holds:

Leatherman Wave
Small First Aid Kit (latex gloves, stretch bandage, crepe bandage, 2 x 5cm non-absorbant dressings, 5 x alcohol wipes, 14 x elastic bandaids, scissors, magnifying lens, 6 x safety pins, paracetomol-codeine tablets, Ibuprofen and Piriton (antihistamene).

'Urban Survival Kit':
Tobacco tin
6 feet of quality tape to seal tin
2 1/4" blade folding locknife with built-in red LED light (Whitby Firefly)
Turboflame Windproof Lighter
Photon Microlight
3 Starlite SL3 6mmx 50mm fishing lure lightsticks (last 12 hours each)
Mini Fox 40 whistle, glow in the dark
Mini slotted / cross head screwdriver
Small pair Scissors
Small pair tweezers
Scalpel Blade
12 assorted adhesive plasters
2 Paracetamol / Codeine tablets
2 Piriton Antihistamine tablets
2 Alcohol free cleansing wipes
Sewing kit (2 needles, 4 safety pins, 4 hanks of thread, 2 buttons, 1 press-stud)
Suunto Clipper Mini Compass
Small pencil
10 mini fluorescent Post-It Notes
International Phone Card
£50 in assorted notes / coins

plus:
Really flimsy yellow plastic poncho (very thin & small)
Pocket Gatstix Ceramic Sharpener
20 feet of stupidly strong Irish Waxed string (red)
More spare contact lenses
3M Dust mask

All this really does fit into a tiny pouch and everyone still thinks its my PDA.

In my laptop case I have a litre of Isotonic drink and some chocolate.

My car, parked in an outside car park away from the building has a very large car kit:

Boosters
Fuel Can
Jump Leads
Tow rope
Hi-Vis jacket
Warning Triangle
Lightsticks
Tools
Jack
Solar / wind up radio
Motorola Walkie Talkies
Water
Food
Spare Clothes
Boots
Rope
Wire
Cable Ties
Duck Tape
Dougs Comprehensive First Aid KIt
Ponchos
Tarp
Hexi-Burner and Pot
3 pack of bics
gloves / masks / goggles
Fixed blade knife
Golok no. 2 machete
crowbar

All this gets me home to my rucksacks containing BOB supplies to disappear to my cottage in the Welsh Mountains (hopefully!).

Phew! (actually I've got that much stuff kicking about I've probably forgotten loads) <img src="images/graemlins/crazy.gif" alt="" />