I keep lipo bags close by as well as an ammo case, incase my lipos start puffing. If they start puffing I pull them off the charger stick them in a lipo bag and then inside the amoo case. then I can carry the ammo case outside and leave it for awhile until I figure out if its going to do anything else. Once I'm satisfied that it isnt going to catch fire I get the lipo, cut the connector off and soak the lipo in slat water for 3-5 days. Then its safe to throw them away.
The lipo bags I've seen have all been abotu the same thing so I dont think it matter which one you have. The big lipo bags will hold 2 or 3 lipos at once the smaller ones will hold one lipo easy and maybe 2 if you stuffed em in there.