How would you go about having fun making electronic circuits? How about by combining it with play dough?...
Here is a cool video that explains how you can create circuits with conductive play dough. Squishy Circuits are a project from the Thomas Lab at the University of St. Thomas. The goal of the project is to design tools and activities which allow kids of all ages to create circuits and explore electronics using play dough.
Check out their website. They even have recipes for creating the dough that allows us to build circuits rather easily and intuitively.
This is great for everyone to experiment with... and probably doesn't tastes too bad either!