I like to start with my bare hand and her across my lap.. then depending on the situation progress to a paddle or make her go to the pole.
There i use floggers, crops, belts, bare hand and paddle ..
Often switching so she gets various intensities until she has overloaded or her lovely ass has reached the desired level of redness or soreness dependig on why she got that spanking.
For play for punishment for Just Because I Can.©
More spontaneous spanks will get her whatever is close at hand. I've even used the garden hose when outside.