What is a spare incubator, that is just not right...
Sounds like fun, will you get he chicks that hatch or does the families keep them.....
I expect to get them back, but if they want the keep them I don't mind. I'm not planning to give them anything really valuable, though the definition of which breeds are valuable might change over time.
Most of these families are homeschooling and it will be part of their science lessons. I'm providing mostly white eggs (leghorn x ameracauna) so they candle easily, but will put a few others in too (from our easter egger's for ex). I expect to field a lot of questions, but will also suggest they research and post questions on BYC. Getting information is also part of the "curriculum", and I will suggest they keep good records and record weights to track water loss. Some parents will require a lot from the kids (especially the older ones), others will let them figure it out on their own. My hope is that all the kids will gain an understanding of where their food comes from. Might even get some new chicken hobbyists out of this.