i don't think the law mandates any basic tool kit (which is strange, because the law mandates a spare tire).
the law does mandate the EWDs.
aside from the tool kit that came with the car, i also have the ff:
tire inflator device (get the more expensive, heavy duty one; hindi ka magsisisi);
replacement fuses;
replacement bulbs (one headlight, one parklight, one stoplight, one signal light);
size 5-6 mm and 12-13 mm box wrenches, or any other combination your car may need (box wrenches are preferable to open wrenches most of the time);
philips and flat blade screwdrivers ( i don't like the "flippable" one some cars come with.);
if your car is an auto trans, a pair of jumper wires and if affordable, a battery charger ( if MT, no need, as it's easy to push-start);
1 or 2 blocks of thick wood, to chuck your wheels with, in case you need to jack it up;
gloves and a mat of sorts, to use when you need to change a flat or fix something, and clothes, to make you look decent after you change a flat;
and wipes, to clean your hands with after a dirty job with the car.
at home, however, i have quite a slew of tools, including an alligator jack..
Last edited by dr. d; November 17th, 2013 at 01:18 AM.