I have a little plastic case the size of a lunch box that I use and in it I carry:
2 - 4800's
4 - 3200's
1 - 10A power supply
2 - Flight chargers
1- Avionics Li-Po Charger
1 - SBS balancer
1 - Volt meter
1 - 1250mAh Lipo for my Trabnsmitter.
It's basically my Li-Po test lab and it fits in the same case I used to use just to hold my 12 Ni-MH batteries.