The Intergalactic Travel Bureau is a cool combination of science education outreach and performance art that gives people a chance to interact with real scientists. All you have to do is just walk into an ITB office and start asking questions about space, planetary travel, and astrophysics. The ITB has set up shop before in New York and London. Now they're trying to raise money to take the show on a larger tour of the US and UK. When you donate you get a chance to help decide where the tour will go and you can earn some great rewards, including custom, vintage-travel inspired postcards. There's more details and a video on Kickstarter.