Once again i go back to the Apple and, or, carrot. Usually i carry a couple of carrots and a few apples with me to eat throughout the day. I always use one of of the apples and one of the carrots to make my pipe with. No one really pays attention to a person with some fruit and other lunch time items.
Apples and carrots make dandy edible pipes and there are no dangers to using either. They work great for a toke here, and a toke there.
Just make your pipe prior to going out and about in your day if possible. Very very simple.

peace,
dai*ma :smokin:
happy smokin and eatin !!