This was a big hit and it was actually C's idea. He brought up an old mobile phone from the basement and said, "Mom, what's inside this?" The battery had been removed a long time ago and it was an OLD giant phone, completely not usable, or donate-able. I got out some small screwdrivers and let the boys at it for a while. I did help crack a section open with a butter knife that was being difficult. But they took quite a awhile dissecting each part. I have to say it made me want to look for some more junked electronics. Maybe we'll get a pile of parts and try to build something.
What do you have that you could take apart?