Our 8x16-foot sukkah (temporary hut) for the Jewish holiday of Sukkot. Other places sell kits with welded corner pieces you slide EMT into, but they aren't as sturdy as the one I built with MakerPipe, and are more expensive as well.

My previous sukkah kit, in a different house, used 2x4 and 2x2 lumber, which is obviously much heavier and takes up much more space when stored than the EMT, so this version is much more convenient in the smaller house we live in now. And easier for this 66-year-old to move around and assemble.