-You carry a Sharpie marker in your purse at all times! (For last-minute package addressing!)
-You keep an extra roll of packaging tape in your car glove box (for last-minute taping in the P.O. parking lot!)
-At any given time, on any given day, you can find a spare Customs Form lying around your house. You have stacks of them stashed away everywhere!
-Your "spare bedroom" looks more like a 7-11 than a place you could sleep... beef jerky, powdered juice mix, chips, peanuts, cookies... everywhere! 
P.S. Sarah, Sara B., vtleogal, tessajangel, Edie.... you have the cutest little stories! Your husbands/ kids sound so sweet!