Shocks in shipping containers that would charge batteries that would allow for gps tracking of all of the containers.  Also, when stacked they could essentially distribute the electricity.  Harvesting the energy from the force of tons of pressure would be interesting.  Also, they could be very safe batteries!! You could use Lightsail storage.  Then it would be also be eco-friendly as well.  This would be pretty cool.

The gps would then allow for more effiecient logistics which would make the cost of new containers non-existent.  At first not every container would even need to have the system installed.

Main concern is the weight of the lightsail system may be prohibitive…  Also, if you want GPS units that always are on and not intermitant when ever you have the juice, we might need a better storage system…

Scratch that, right on their website the system claims to be able to be placed in a shipping container form.  This makes me think that if you buy a few of these to generate the electricity for the rest of the system and then use relays to distribute the electricity when stacked then it would be perfect.  Then each container would only require a simple battery that has properties that would make it work in such a system for a very long time with being able to charge and discharge at will.  The great part is that the compression of the air will be done by moving the containers.