The Dripple Pipes is a craftable musical instrument introduced in the Shipwrecked DLC. It can be found in the Magic tab. It requires a Piratihatitator to prototype, and can be crafted using 1 Horn, 2 Nightmare Fuel, and 1 Rope. It has 5 uses. When used, it creates a light rain for a half-day (4 minutes), unless it is Winter, in which it will create a light Snow instead.
The Dripple Pipes will not function if used in Caves or Ruins since it can't rain there.