Just to note on the airbag front, usual best practice for disconnecting airbags is to disconnect the battery, leave it for half an hour for any capacitors to discharge, then remove. Also advised when remaking the connections to stand outside the car and turn the ignition on the first time, in case it's shorted and fires as soon as it sees power!
When storing airbags they 'should' be placed in a secure locked cabinet with the airbag facing up - don't ever put it face down.
Advantage of doing this is you're less likely to get a fault code recorded if you disconnect the battery, and much less likely to get killed by it
Airbags used to be part of my day job (vehicle safety and accident investigation)
Adrian