At the checkout counter of most grocery/drug stores there are usually small travel size bottles of tylenol/aleve/motrin etc. These are cylinders (I've seen two sizes, 11/16" diameter and 7/8" diameter) with waterproof and childproof caps. I buy whatever is on sale then empty the bottle, peel off the label, wrap three feet of gaffer tape around it (makes a good spindle for storing duck tape) and fill it with one type of pill. Depending on the size bottle and size of pills I can store 5-50 pills in each.

A handful of these bottles store all my FAK meds. They are in separate waterproof and crush resistant containers that also have duck tape storage. Try it. It works for me.