1 x 1 = 4

I have one houseplant. It lives in four pots and is beautiful once a year. Meet my holiday cactus. It gets ignored and abused. In the summer it lives outside, and each time a storm or the dogs knock it out of it's pot and break it into pieces, the pieces become new plants.

The original plant came from a friend 25 years ago. Every year it (all versions in all pots) puts on this show, despite my lack of good care. It apparently has great holiday spirit!