So many, it all depends on what the moment requires.
Sometimes, i feed them tiny snippets of information, that unwillingly leads them to a set conclusion.
Sometimes, i mimic their body language, making sure that i don't copy their every move. Sometimes, i just make my body language more inviting, paying attention to foot placement, tone of voice etc.
Occasionally, i deny the person something, such as my "interest" or "help". This often leaves them in a state of confusion, leaving them more pliable. Sometimes, if the situation requires it, i will deny them for good. This is a tactic i often use against narcissists, denying their ego by starving them of attention or reaction.
These are a few of my tactics. I have others tucked away. Some moments, i think on my feet and improvise.