Where is the weirdest place you have left a plant and forgot about it only to find it alive and growing some time later?

I just found a spinach plant I left in a corner in the garage. It was not next to any window whatsoever, but some ambient light weakly gets in. I was amazed it had grown several pathetic looking leaves since I had seen it last. I am shocked by how much diffused light must get in there to allow for this and the hardiness of this little spinach plant!