My managers birthday is coming up but I have the urge to not give them any money.
Why aren't you going to give them money?
Because I hate how they control the team.
I'm sorry you have a bad manager, and you are in your right to not give anything. They are your manager, not your friend so you have no obligation to give them gifts or money if you don't want to.
I'm going to give them the smallest amount of money I can.
At least you're going give them a little something, that would be good. Like I was saying, keep in mind you are not obligated to do this.