I've got an Alpenlore belt, onto which I can slide or hang things I need as required. Usually, it's just the combination of knife, saw, FAK and waterbottle (in a pouch with the Crusader cup). However, in general, I find that I prefer having a small day sack, rather than having lots of bits and bobs hanging from my waist; at least you can take it off easily when stopping for a brew or a break.