I have a question in regard to packing as much as possible into a small (say, Altoids-sized) urban survival kit. Is there any perfered way to pack a small supply of medical pills? Some over the counter pain killers come in foil packets that are more packaging than anything else. Perscription meds come in plastic containers that are mcuh too large. Packing them loose won't work. Am concerned about wrapping them in plastic food wrap - dosen't seem like it will protect for any legnth of time. Maybe sealing in candle wax? Foil wrap? Any ideas?