For my first full badge I wanted to create something that would be useful after the conference, unlike most badges. I took the most useful tool I had, a bus pirate, and tried to build a project around it. I am also a fan of TRON and that inspired the design.
To encourage using the integrated tool the badge has a switch to physically connect the tool to the brain of the badge. Each badge came with an Identity Disk which communicates with the badge so you can view this communication via the bus pirate.
The kickstarter for the badge can be found here.