Here’s an interactive celestial panorama, courtesy of NASA and ESO. You can see both visible light and gamma ray views of the skies. Check out the gamma ray constellations, which are rather different from their traditional conterparts.
If you’d like to annoy nearby people with funny noises, you can play WebSID, an online emulation of the SID chip in old Commodore computers. It works with your’s computer’s qwerty keyboard.