UPDATE: now a new version with Customizer http://www.thingiverse.com/thing:46825Big Whistle Collection with a lot of different tones! Funny whistles for example for your kids. My kids love it!OpenSCAD File included. Make your one whistles. Put a name on it.Try also the big whistles with the holes in the middle.And the are all working!Whistle Audio Set for kids, parents and you. Enjoy it and have fun!Big Whistle Collection with a lot of different tones! Whistle Audio Set for kids and for bird simulation.If the whistle is printed use a screwdriver to break of the small sphere inside the whistle. It should break quite easily because it is connected with a small cylinder of 1 mm on the floor.Whistles with differentYou can create your one whistles with the OpenSCAD Source File. Also use write.scad (http://www.thingiverse.com/thing:16193) if you want to use text on the whistle.UPDATE: 3-Whistler STL online and a special thingiverse-Whistle