Lightweight tent recommendations?

Bus shelters all over Europe, post offices across the US, churches everywhere, the little alcoves in front of posh old buildings, multi-story carparks, the cardboard recycling pile in someone's driveway, under a truck full of beehives, on the grass outside a hostel, in the middle of a field and other random bits of "nice grass", loading ramp of a stock market, ground floor inside a block of flats on police suggestion (Pluzine). I dunno, just some I can remember.