I can do the following:
-2 stack shuffle
-3 stack shuffle
-top of stack shuffle. [Shuffling 4 or 5 chips at the top of a 20+ chip stack.]
-drop and twirl.
-fat drop and twirl. [same thing as the original, except you drop and twirl 2 chips.]
-chip over
-chip under. [Variation of the chip over, except it goes from the back to front.]