Snowball
A snowball was a spheroid projectile made of compacted snow.

Upon  "Archer's Comet" in 2151,  called it "one big snowball". Later, when Malcolm Reed and Travis Mayweather discussed what to do on the surface of the comet, Mayweather suggested a snowball fight. ()

In 2364, Jean-Luc Picard was surprised by a snowball to the cheek as he encountered Wesley Crusher and his friends exiting the holodeck at the end of their ski lesson. Their apparent snowball fight had gotten out of hand. ()

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Sporting equipment