Bill,
Thank you very much. Nothing wrong with used capacitors. I think they were using used capacitors to some extent already. Some in-expensive poly caps would really help. Many were using electrolytic caps from here and there and doubling up caps to get the needed value. Same for inductors... I knew of one case where two were used in line to get a larger value.
I don't mind donating some time to this project. It is well worth it and very rewarding to see young kids get excited about this stuff much like I was when I was there age.
Scott Clark is pretty generous to Gary and I too. We driver down the day before. First Gary drives a little over two hours to my house, then we drive a little less than three hours to Scott's house. Scott feeds us supper and allows us to stay at his house. The next morning we head to school and get started. The kids are excused from there other classes unless it is important that they have to be there for a specific class. They make an all day event of it. Kids are making adjustments to their external networks, seeing the measured responses, and having a blast.
We then break for lunch and chow down on the delicious cafeteria food.

Then after lunch we move on to the listening evaluations.
It is just as much fun for Gary and I as it is for the kids.