I want to make it spring out of a freshly opened box. I have no idea how to do this though. When the lid opens then confetti is supposed to fly/explode out. Any ideas?
Test Monkey,
This sounds like a job for particles:
http://mediawiki.blender.org/index.php/Manual/Particles
Best of Luck!
and make the mesh for each particle a little white star with a little reflectivity. Give them an initial upward z force, and let gravity do the rest.