
I noticed Jeff Barr playing with large numbers of physical prims and it made me wonder about the possibility of building a virtual egg-timer - a clear rounded-end tubular object with a narrow section in the middle filled with small physical spheres.
I started by knocking together the tubular container. Fairly straight-forward. Then I filled it full of small physical spheres. Then I made a mistake - I moved the outer egg-timer case without first making it physical itself. This left all the little balls in mid air. They immediately fell to the ground making a bit of a mess.

To be honest... I don't even know why I started!