"Indoor Camping" was exactly the expression I once used to describe what I was doing having moved to a flat which I had no furniture to put into.
My original language is german and I was speaking german then. I did NOT translate "Indoor Camping" into german!
Funny to see that english speaking people are inventing the same expression for their own language. Still more funny to see what I might have missed or "missed" when I practised "Indoor Camping".