+1 on Purel in the EDC. At Target in the travel toiletry section I found a small bottle with a rubber clip, or 'jelly leash' so it can be attached to the outside of a bag.

My brother has a larger bottle he carries in his Load Bearing Vest that is from US Cav or similar that is a hard Mil-Spec bottle that I will be picking up shortly.
http://www.uscav.com/Productinfo.aspx?productID=10728&TabID=548