I have a one hitter that is in a dugout. It is nice for some quick hits. Although, it can get pretty harsh sometimes. Especially if you smoke more then one. Sometimes it can get very hot. It is metal though. I've never used a glass one.
Any law against what I do on this forum would be impeding on my right to freedom and the pursuit of happiness. So unfortunately, I'm forced to play the role of a cannabis grower instead of actually participate in the hobby. (All pictures are pulled from the internet and knowledge is only portrayed as personal experience without ever having any actual experience)