Friendly electric stuff without all the heavy metal!
Learning to design and create soft circuits of increasing complexity has the potential to be an empowering and formative experience for young people. These activities invite students to consider technology in a more creative context - and, likewise, to consider creativity in a more technical context. By integrating electronic and craft materials, soft circuit activities can appeal to a wider variety of students than traditional science or art activities. Students should also develop a sense of confidence when working with science and technology, as they will be supported throughout the process of successfully debugging unexpected behavior in their projects.
source: Emily Lovell - http://alumni.media.mit.edu/~emme/guide.pdf
Paper Circuits
Using copper tape and surface-mount LEDs allows you to make a fully functional circuit on a flat surface, like a piece of paper. You can make light-up greeting cards, make origami animals come to life, or create three-dimensional pop-up paper sculpture that have working lights in them.
source: http://tinkering.exploratorium.edu/paper-circuits
e-Textiles
Electronic textiles (e-textiles), are electrical circuits created using flexible conductive materials (such as conductive threads and fabrics) in conjunction with discrete electronics components (such as lights, batteries, switches, and sensors).
source: Emily Lovell - http://alumni.media.mit.edu/~emme/guide.pdf
Squishy Circuits
Use homemade conductive and resistant (non-conductive) play-doh to build electronic sculptures that light up, move, and make sounds.