I remember in my teenager days, having to carry as many rolls of 35mm film as I fit into my camera bag's main compartment. Nowadays, memory cards being flat, you could just slide them into your kit bag's front, side, or back pockets, leaving the main compartment with room for more lenses or your packed lunch!
Going on a flight so weight and size restrictions apply. therefore I use this as a solution. it still amazes me what it can hold
Bag Tamrac System 6 ( had it for many years) size approx in inches 15" long x 11" wide x 9" tall. What I would say is this is a very well made product. I have taken it to Brazil-China- Egypt- 2 med cruises- Norway cruise to name but a few and it has never let me down
Inside Nikon D810
Panasonic camcorder, could be upright for another lens
Nikon afs 24-70mm lens ( nearest)
Nikon 50 MM lens (furthest away)
side pocket battery duel charger Bluemax ( can be a used to charge both by changing slot adaptors)
inside room for 2 memory card holders (silver holder showing), 8 SD cards and 4 CF cards+ another CF card in own case
small front pockets for batteries ( others can be placed under 50mm lens and camcorder as there is space)
camera strap (peak design) will be resting on top of camcorder.
other bits and pieces such as swabs fit into top cover which has a mesh pocket
Still have the other side pocket for charger leads etc
If I need say to take 70- 200 mm lens I can carry that as a separate item
For home use or carrying in a car I also have a Tamrac professional bag which takes almost everything I need being a lot larger than the above
or even take a couple of peli cases