I've looked at her cooler bator several times, just to get some ideas for future plans. It looks like it has worked out good for her. I think the only thing that would improve it would be electronic controls. It's still in the early stages, but I'm really loving the stability of this digital thermometer with proportional heating. Since I fired it up this morning, the temp has only fluctuated .4F (+2 and -2), and it went low or high for merely a few seconds. While my wife was cooking supper in the next room, which heated the house a few degrees and raised the humidity a good bit, the temp in the bator never raised above .2F. I know... I'm getting a little too excited about this gizmo. I'll know much better how it performs in another 19 days or so.