What about taobao.com? If not in large quantity but with many selections, taobao.com would be a good choice for you.
I know you must say it is in Chinese. Yes, it is in Chinese, but I can help you if you need. By the way, if you need larger quantity, and custom make your own design, the small sewing contractors around where I live can help. But they have to produce as per samples.
Are you interested? my email is: sales01@rpimoulding.com I'm Vicky of Respon Plastic Industrial Co., Ltd. We do custom plastic injection molding. But I can help you privately after work.