For me -- a whole lot less than I did 8-10 years ago. I remember various trips to Vietnam, Greece, Nepal etc where I lugged 2 manual bodies (FM2n + FE2), 24mm, 50mm and 75-150zoom plus tripod, flash etc. On my more recent trips to Russia, India and egypt all that was cut down to just a D70 and 18-70 lens plus a P&S. Soon I'll be off again to Eastern Europe and this time my bag will have a D60, 16-85 and 70-300VR. Actually I'm still reconsidering the 70-300 As I get older and lazier I bring smaller and simpler stuff!
1) Sony a200
2) KM 50 F1.7 (of coz)
3) KM 35-105 F3.5-4.5 (of coz)
4) KM 75-300 F4.5-5.6 (too heavy, about 900g, will choose between 4 and 5)
5) KM 100-200 F4.5
6) Sony HLV 42 AM (of coz)
7) Minolta 505 si Super (film, not sure whether I should take it with me, most probably not)
8) Vanguard UP-RISE 43 (my lovely bag)
9) My glasses.
Wow, paid shoot or Holiday? Can't imagine packing so much and flying to Hong Kong. Last time I was there was many years ago for 1 month but I only brought 2 bodies and about 4 lenses. All OM film stuff so it was lighter and about 60 rolls of film. Driving to malaysia maybe will pack more but flying has it's own set of limitations.