Yes, it is a plastic ball. But what is it?
Answer to last week: That was the underside of a set of drill bits that came packaged in a fancy dispenser. Here's a shot of the business end:

One of those foam squeezy balls to exercise your hands/grip
Posted by: Casey at mars 20, 2008 09:12 FMlaundry detergent
Posted by: katrina at mars 23, 2008 09:33 EMA ping pong ball?!?!?!?
Posted by: moo at mars 25, 2008 09:00 FMA float from the float system in a toilet tank.
Posted by: Mark at mars 25, 2008 09:54 FM