"What's Sketchcasting?
Step 1
Record a Sketch with or without voice. Explain something, have fun, or create art.
Step 2
Then embed the Sketch player in your blog or point people to your Sketch channel. "
"Circuit Scribe is a rollerball pen that writes with conductive ink. Combined with magnetic components, it makes creating circuits as easy as doodling.
The online editor makes it easy to create your own sketches and share it with the community."