I recently got one of those silly lookin fake cigarette one-hitters called, euphamistically, a 'tobacco taster'. lol!
My only question is, how did I live without for so long!!?
In terms of preserving your stash and not wasting weed, it's the best method I've found yet. Rather than keeping an 'emergency pinner' in my purse for those scary panicky moments, and then having to add to my stress trying to find a discreet place to smoke, I keep a fake cig packed with literally less than a tenth of a gram and tucked away, and I don't even really have to go hunt for a convenient dumpster to duck behind.

Three thumbs up (I had to borrow an extra).