I like wind sounds, especially alternated with regular flute sound. The feeling of flexibility and freedom cannot be described. If you play a traditional flute piece after practicing this flexibility exercise, it will be with much more control.
Flute Colors arrangements
Sheet music with extended techniques for flute
Here you can buy and download sheet music of arrangements with extended techniques for flute.
Variations on well know flute exercises, traditional songs, but also modern pop songs. From Drouet and Bach to Justin Bieber and Bruno Mars. Have fun with extended techniques for flute!