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.
Select a corner of your house lawn and construct a sheltered place with pallets. Chairs, tables, sofas can be placed beneath it. During hours of daylight, it will prevent you from sunlight and darkness of night can also be endowed under it.
These are interesting, creative, and economical way to make your own swimming pool! You can choose from a wide variety of temporary swimming pools. Depending on your level of construction skills, you (Diy House Building)