Earlier this year, we hatched several "homegrown" eggs in a borrowed incubator.
As advertised, it was a great experience for the kids. The humming box in the corner, forgotten for most of three weeks all of a sudden became the object of intense interest as scattered pips and taps were heard within it. The first chick, "Peeper", hatched while we were getting ready for bed. But by the time the second chick kicked its way out, the kids were thoroughly engaged. And lucky for us, Dan's penchant for technological innovation and a homemade tripod resulted in our capturing this, the sound of absolute wonder (Along with a lot of extraneous family stuff):
The 8 chicks that resulted from this experiment are adolescents now, freeranging about with their cousins, aunts, uncles outside: