I'm sure someone has done this before but it seams that you would have a functional crack pipe by simply drilling a hole into the side of a glass coke bottle.
As long as you romove the labeling and thoroughly clean it.
I would think it would be significantly more robust than a light bulb, also I would rather buy a coke bottle and glass drill bit than try and find a meth pipe.
I will try it and report back.
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