Just heard about this brewery and their sustainable kegging practices so I looked it up. Looks pretty cool to me. Anyone ever seen these is homebrew use?
http://staplesmillbrewingco.com/kegs
http://www.keykegbeer.keykeg.com/en/home.html
http://staplesmillbrewingco.com/kegs
http://www.keykegbeer.keykeg.com/en/home.html