Golan Levin talked about his interactive artworks. And here are some of the projects that he showed:
If you are more curious about it you can check his talk in TED:
Tools
Fritzing - an open-source tool that allows users to document and prototype their Arduino.
Dfacer.net plugin for firefox that allows you to paint on web pages.
The Party
In front of the Kiasma Museum "Self-Sustainable Party Container" - an interactive installation build with sound and light where the energy was provided by spectators on gym bikes.
AUTHOR: Louise Lazzari The author is Visual Designer of HammerKit.