You can find prepaid credit cards at most drugstores, grocery stores & convenience stores. Be careful to read the fine print on the back of them before buying; there are different fees associated in the 1st time you use any prepaid cards. I've seen the fee as low as $4.95 (Walgreen's Visa) and as high as $9.95 (Publix's American Express).
the best one on the market is the greendot gold card. i have one its 4.95 a month and you can load up to 1000 dollars on it. and it is personalized with your name on it, and i use it everywhere and i do mean everywhere they accept credit or debit cards.