Yup, plenty! Most ones that work with PC's work with your Note. The catch? You need an USB OTG Cable. It allows you to connect USB stuff to your phone, like mice, keyboards, USB sticks, USB Card readers, etc.
JUST BEWARE! The USB port in your phone doesn't provide too much juice; AKA it's not a 'powered USB'. If the device you want to use needs a Powered USB port, like hard drives or disc readers, it won't work unless you get a Power USB OTG, which basically has two ports, one for connecting the device you want to read on the phone, and another that you need to connect to a power adapter to supply the extra power your phone can't give out.