Sound:

Bow:		https://www.freesound.org/people/Jon285/sounds/49513/
Firework Start:	https://www.freesound.org/people/Mr%20Sensible/sounds/15000/
Firework Blast:	https://www.freesound.org/people/escortmarius/sounds/172870/
Firework Sparkle	https://www.freesound.org/people/schafferdavid/sounds/198354/

Texture:

Planks Base:	http://www.texturemate.com/content/free-texture-wood-2010100103

Model:

Glass panes	kwerti (Minecraft Forum) (edited)