The Garden Igloo Kit. in a few different versions. could be a greenhouse +/or alternative to tent accommodations to house a few more summer retreatants. not particularly cost effective though, in my humble view.
Biodomes Glass Geodesic Dome Homes
Geodesic Dome Homes, Geodesic Dome Greenhouse, Earthship, Dome House, Green Homes, Glass Houses, Oaxaca, Tiny Houses, Arquitetura