A few weeks ago I went to
Lyric Hammersmith and saw Interiors. It was eggs. It was set up like you were watching through the windows into a house, and you couldn't hear what the characters were saying, just hints and observations from the narrator, who was another secret watcher. And there were lights/projection over the outside the house to look look like wind and snow and stars :)
Here's the official blurb:
Behind a window, in a cosy room, a group of friends sit down for a meal. The food is being cooked; the lamps are on, everyone is happy. Talk begins and soon stories unfold around the table, stories about the living and the dead, about missing necklaces and what happens when people get hungry. Outside someone is watching. Vanishing Point return to the Lyric with this major international collaboration following their sell-out hit Subway. Utterly hypnotic, Interiors is about sounds, silence, and the darkness outside the window. This production is inspired by the Nobel prize-winner Maurice Maeterlinck’s astonishing play, Interior.