I have seen several youtube videos and instructables on how turn an altoid can into a survival kit or first aid kit. Though this may work for some, I believe I have found something that works better for my purposes. The clam shell action of the altoid container in a way places some of the volume in the lid, this may take away from the overall capacity. Another thing that I have noticed is that their are other, larger containers that are easily available.
Step 1: bigger is better
I found an old metal band aid container to be better. (not sure if you can buy them this way anymore but you can try looking around an old general store, or your grandpa's garage.
I like it because it seems to be a little tougher and it is definitely larger than the altoid can.