Here is the Horn Stand with speaker for iPhone 4 from Strapya-World. The Horn Stand is basically a iPhone 4 stand with speaker that requires no external power. It enhances the sound by playing through the horn shaped speaker.
Made of 100% natural cleavage silicon, the Horn Stand has a retro-chic design inspired by good-old gramphone and is washable. Available in black, brown, green and white, the stand is priced at 2,780 Yen.