Just something that may tickle the fancy of a few of you guys, since it certainly did so for me!
LightSail is a Solar Sailer - a satellite propelled by the sun itself - which is currently undergoing testing. By backing the project, you can be a part of the mission!
I'm not gonna say much more on the subject. Nah, after all, Bill Nye says it better himself:
https://www.kickstarter.com/projects/theplanetarysociety/lightsail-a-revolutionary-solar-sailing-spacecraft
Kickstart!