IceshotsRay and Cape write “We thought it’d be sweet to make shot glasses out of ice. There are some bars in Europe and Australia which are made completely out of ice and kept below freezing, we didn’t go that far but these are pretty cool (no pun intended), check it out. We used Dixie cups. They come in several different sizes. You will need two different sizes, we used 9 oz and 3 oz cups…” Link.