12/12/2011 10:58 am ET | Updated Dec 12, 2011

Best iPhone Accessories: Crazy Cases, Professional Camera Add-Ons And More

Back in the flip-phone days, the cellphone was the accessory. But now that smartphones are becoming de rigueur, the demand for after-market add-ons is increasing quickly.

According to ABI Research, a marketing research firm, mobile phone accessory sales will bring in over $50 billion a year by 2015.

iPhone users spend more than other smartphone owners on accessories. According to a survey conducted by online shopping site Retrevo, over a quarter of iPhone owners spend $100 or more on accessories for their phones, while only 16 percent of BlackBerry users and 14 percent of Android users spend that much.

So what should you spend your iPhone accessory allowance on? We've put together a list of eight awesome iPhone accessories for people who are into music, movies, beer or Hello Kitty. Check out the slideshow below to see the mobile add-ons we want right now.

Sweetest iPhone Accessories