And of course the Danny Byrd sample pack, has some great highhat and shaker loops, as well as the highpassed breaks in the loop separates folder.
Chop them up and rearrange to build some interesting stuff.
HiHat breaks are easy to make man. There also isint any rules on how to do it either. A good way tho is....
Find ya self a good couple of hat samples, dont have to sound the same, but sounding similar will help.
Put a hat on every 8th, so you get the solid hit going on. Then you could add a different hat on another track on every 16th, already you will start to hear some shuffle going on. To make it more shuffly add another hat in a different track but make them ghost notes (hit slightly quieter) but put them on the off beats etc..