BottleHood

This is a company that recycles glass bottles and uses the bottom half as glass cups that look amazing.
This company sells these glasses for about $15 a cup, with package deals making them cheaper. I realise this is quite expensive, so I did some research and came across a tutorial that explains and reviews different methods of cutting glass bottles and also suggests the bottleneck can be used as a guitar slide. The bottlecutter uses costs ~$40, which (depending on how many glasses you make) is quite cheap.

I'm in love with the aesthetics of these glasses and am excited on cutting some of these myself. I will update with my own experience cutting these in the future.