Amsterdam Coffeeshop Directory Forums

I know glass has been an integral part of the cannabis community for a good few years, but it's only recent that I've seen the rise of these glass blowing events......Borofest, Highland Flames, Amsterdams 710 Art Fair etc. I went to one locally as well and really enjoyed the interactive nature of it. It's actually really impressive what they can do. Has anyone been to any of these? Are there similar events in US and other places?