text: Hiya, I don't want to be the one to burst your bubble, but it'd be well worth checking what happens with respect of insurance if you're promoting the idea of reusing glass. I'd presume that for somebody to use these, they'd have to have a vessel which has already been used, so they'd have to clean it of existing residue and dry it, potentially causing damage to the glass. All the manoeuvring in somebody's home and the potential for them to reuse the glass ten/twenty times, and some take better care than others - I think there's a risk factor you need to check for your own benefit.
  
  It's a wonderful idea and the sort of thing I've had a fleeting thought about - it'd reduce product costs hugely, so has financial and environmental credit. Please speak with your insurer and see what is said about customers reusing vessels. If they give you the go-ahead and you make sure you're giving customers the best care advice, then I wish you every single success.