It was mentioned in a previous comment that cacti are very hard to kill.  Here is proof, although I think the photo of the first one makes it appear as if it’s trying to escape.  To be fair, my wife takes care of these.  I just assumed my presence would make them wilt but they are pretty happy over all – except the one trying to escape of course. I’m sure you’ve heard how the camera can add 10lbs? I think they also add 10 times as much dust. These plants really don’t look that dusty in real life. I don’t think.

Cactus attempting escape	Christmas Cactus #1
Christmas Cactus #2	Christmas Cactus #3