Last year i purchased too many glass cans, and now it's the only vessel I drink from. Also since then, I got a table that get's really bad rings from moisture. I've wanted to make a coaster that would properly accommodate my glass cans, and add functionality. While this may appear to be a simple design, these coasters (on a smooth surface) have the added benefit of making it very difficult to knock over your glass can, which if you're clumsy, or at a deficiency of any other way, is very beneficial! The holder should hold around 18, they're not captive and will come out easily, which I may change in the future.

the coaster is also made to be used upside down, if for some reason you wish to use it with another vessel. Also, the coaster fits regular cans quite well, and is actually a bit oversized for my specific glass cans, and based on my sample size of 2, should fit all brands of glass can.