A nerdish way to spend an evening

• Get a laptop
• Install stellarium
• Go outside and bring:
  • binoculars or a telescope if you have one
  • a bottle of wine (or beer)
  • cheese
  • a blanket

Try a spot where there are no lights. It's hard if you're in the city, but it's really nice when there is darkness around.

Launch stellarium, see the sky. Enjoy.