bagatelle

1. a game in which small balls are hit and then allowed to roll down a sloping board on which there are holes, each numbered with the score achieved if a ball goes into it, with pins acting as obstructions.
2. a thing regarded as too unimportant or easy to be worth much consideration.

   dealing with these boats was a mere bagatelle for the world's oldest yacht club

3. a short, light piece of music, especially one for the piano.

mid 17th century (in bagatelle (sense 2)): from French, from Italian bagatella, perhaps from baga ‘baggage’ or from a diminutive of Latin baca ‘berry’. bagatelle (sense 1) dates from the early 19th century.