I have had this kit for a number of years and it goes nearly everywere with me it consists of:
Puritabs, cotton wool, hair net, 3 petrol bulbs, potasium permanginate, life boat matches x5, scalpel blades x5, safety pins, strong sewing thread and needles, razor blades x2, cabel ties x2, hexi blocks x2, wet fire tinder x2, oxo cubes x2, pain killers x2, rennie x3, dextrosol x4, stanley knife blades x2, fishing hooks x16, fishing line, split shot, plasters x5, magnesium block with flint and of course a condom.
And it all fits in a 50g tobacco tin.
I also carry another similar tin with some more fire starting bits in:
Maya sticks, wet fire tinder, cotton wool and a fire steel.