One of my bags holds the following:
Olympus OM body (currently OM2sp) with 24mm f/2.8, 35mm f/2.0 and 85mm f/2.0 Zuiko lenses, plus an Olympus T20 flash, cable release, lens cleaning kit, spare batteries and an assortment of Kodak film.
It's a nice, small Lowepro bag.
The other bags? That's a secret .