Having a lit candle in the ass or pussy is one of most exciting (most difficult to perform) tasks I've ever demanded a slave ... some loved it ... some not so much ... what do you think of this?
Patience training. Sit and wait patiently. Cock comes to those who obey. Be good and your mouth will be filled with Daddy's cock. Shhhh...nice and quiet.
Needles are almost always were too much for many slaves .... do you like the feeling of needles insertion into your body? .... are you find that pain pleasurable???