If you like this, please vote above. danke! =)
*98% because in 100 situations 2 might just so happen to let in water, it all depends, it's definitely splash proof! and will survive being under water for a good while. ;-)
-And for further reading you might want to check out this similar Instructable.
Step 1: Ingredients & Tools
-Two spent shotgun shells (if you don't have a shotgun, you can always pick up ones left by shooters at a hide, or just wherever they frequent) (You could try a live cartridge if you really want. ;-) (I've dissected about 3, or 4 which shooters have dropped))
-Knife, or scissors