Day to day, three. One zipped and two hip pockets. Hip pockets I have a SAK on a lanyard in one; ferro rod & cravat bandage in the other; phone and wallet in the zipped one. Compact head torch if needed. Watch and clipper compass. Hat.
Day hike I have a canteen in a belt pouch, this also has cup/lid/stove/fuel tabs/wind shield/spoon/lighter/tinder/matches/packet soup/coffee/screech powder/millbank filter. Pertex shirt in it's own pouch. Map card or splash map scarf. Binos on cord.
Hot or going distance an extra canteen.
Poorer weather or specifically doing some bushcrafty activity wear a wool shirt with two chest pockets with some snacks & booboo in and perhaps a proper compass. I bump up the belt kit with a waist pack with water proofs, gloves & warm hat, spare socks, thermal top, a packet meal, fold-a-bowl, sit mat, silnylon tarp and rigging, mylar survival bag, cord, tape, bin liner. Might have a mora companion and/or folding saw. I do carry a bit more first aid TQ & Izzy dressing if I am messing about with axes etc.
Otherwise I have a 30L pack of kit in the vehicle for overnighting, and quite often a base camp set up of stoves and supplies if working. Or I am camping and have a bergen for the trip.