This was fascinating and I was sorely tempted to buy it myself just to see it work, which is why I mention it here, but note that I have not tried this. I just saw it on the shelf and it looked like fun for about $20. It allows kids to make safe (I assume and dearly hope it's safe!) low voltage electrical circuits using modeling clay. The clay conducts electricity which itself was way cool to me, and you can build light-up toys and models. The cover says it makes 15 projects, but I'm assuming those are simply imaginative repurposing of a few basic ones. The point about this though is to stimulate a child's imagination. Society will never run out of a need for inventive and competent engineers, and this is a good way to get a child thinking that this can be a real option for them if they want. My only concern about this is whether or not it overstimulates your child to the point where they are tempted to mess with more dangerous electric things around the house! We definitely don't want that! But with that it mind it looks like a lot of fun, and electrical modeling clay sounds way cool to me!