Ping pong ball

The ping pong ball is a miscellaneous item in Fallout: New Vegas.

Gameplay
They are small white balls that seem to be set up for a game of beer pong, on a desk next to some cups.

Location
Only three of these can be found, on a desk on the ground floor of the King's School of Impersonation in Freeside in the northernmost bedroom. They must be stolen.