How to spice things up?

How do you ladies get things going in the bedroom? Things have been kind of stagnant lately and it's beginning to feel routine. I've been having some confidence issues and I just don't get turned on like I used to. I want to spice things up and really get my guy going. When he's really into then I get into it too. What are some things you do or some things your guy does to you that really spices things up?