Alright, here be what you do.....
Take a 9" piece of pipe, threaded at both ends, place the pills in the pipe and screw two end caps on, the pills are not safe inside this container of sorts.... to keep them from moving in flight, you can pack both ends ofthe pipe with clay .. just put it in your carry on bag and away you do!
Seriously, it's not like you're smuggling thouands of ecstasy pills - this is 4 fucking Vicodin... just put them in your pocket and walk through - it won't set off the metal detector and (as of now) they are not searching passangers as they do when you, say, go to a rave... if you're really paranoid, put them in your sock... if you REALLY want to be 100% ULTRA SECURE get one of those 7-day pill containers, put one pill in each compartment, and also put in some shit like vitamins or asprin, put it in your suitcase if you don't plan on taking them in-flight, if you do, just toss them in your carry on... you're not getting busted over 4 Vicodin... unless you're Arab!
Praise be Allah!