Any box or tote containing various random objects, trinkets or keepsakes (from tape measures to toiletries) one would wish to have handy in case of emergency. Typically stashed in an inconspicuous place in a bedroom.
Kid playing video game addressing mother...
Child: OMG Mom my batteries died, Get me summore!
Mother: Where are they dear?
Child: OMG Mom, they're in the armageddon box in my closet floor!
Samuel L. Jackson to his wife:
ENOUGH IS ENOUGH! I'VE HAD IT WITH THIS MOTHERFUCKING ARMAGEDDON BOX UNDERNEATH THIS MOTHERFUCKING BED! BITCH STRAP IN! I'M ABOUT TO OPEN SOME FUCKING WINDOWS!