Etsy Germany made a glass out of a bottle.
Do you also have a lot of old wine bottles at home? We had. So we cut them and made great vases and glasses out of them.
The workshop was leaded by smil: http://www.smil.biz/
And here you find the tutorial: http://www.etsy.com/blog/de/2012/aus-flaschen-werden-glaser-und-vasen/