Are you looking for a new type of sewing project or maybe a way to teach electronics to children? E-Textiles might just provide the answer to your need for a new sewing challenge - or a unique lesson plan.
I'll give you the short description of e-Textiles (clothes or bags that flash or sing, pretty much anything textile with added lights or sounds) and then refer you to a great article called What Are e-Textiles? Get Started With Soft Circuit Electronics.
The article even gives you some tips on where to search for the items you'll need to try your own e-Textile project.