Our kids were playing with their friends and they brought in a fat, green caterpillar. They wanted to keep it and see if it would turn into a butterfly. We got a jar ready and let them keep it. Things like this don't usually go well for me. The insect usually dies and then we have to go through a long explanation about why and what and all that. When it looked like it was making a cocoon the next morning, we were encouraged. When it was mostly black and looked really sad by the evening, I told them not to expect much. We decided not to throw it out yet, but to see what would happen over the next week or so.
One morning Sarah was getting ready for school and yelled. She scared me and I didn't know what she was talking about, but she said "It came out!!" Sure enough, this beautiful butterfly had emerged from its cocoon. We were all very happy it had survived and I'm glad I didn't have to explain why it died.
We let it go outside so it could be free and live a good life.