A team in Burlington, just about an hour and a half from me is selling this amazing invention. Around here, Mason jars are used a lot. We use them for canning, pickling and just as simple drinking containers. Most restaurants locally use them to serve drinks in or bring your own Mason jar to get soup to go.
The Holdster is a 4-type all leather hand made holder for your Mason jar to make carrying hot things much easier. The most common example being coffee. The team is raising money on Kickstarter and I’m going to back it.
http://www.holdsterusa.com