Some of my friends on different teams told me of an offseason project that they are going to do that seemed like it was fun. They said that they were going to write apps for the iPhone for whatever they wanted. It's just something that they are doing to stay occupied through the offseason since the SDK is free from apple. They also said that if the apps end up working well, that they might start selling it on the app store as a fundraiser for their team.
Another project that I've been told about that I personally want to do is this:
http://www.instructables.com/id/Self...ic-skateboard/
It's a link to the instructables on how to do this project. The following link is to a good website explaining more about the project.
http://sites.google.com/site/onewheeledselfbalancing/