I thought I'd share this idea. I was constantly losing my e-cigarette the first few weeks I started vaping. Between me and my dad, we came up with this idea. It's so cheap and really handy. All I did was buy a pack of mechanical pencils from the dollar store, take the metal clip off the top then stretch it out just a little and stick it on the top of my pipe. No more losing my e-cigarette. Just be careful that you don't put too much juice in if you're using a drip tip because if it leaks out, it might get it on your shirt. I did this once, but dish washing liquid got it right out. No stains.
