The theme is...
My favorite tool is my red-handled hammer - I've had it for nearly 50 years and it has lots of happy memories attached to it. It's the hammer that has been used to hang wall decor in every one of our homes, it's the hammer that I took with me to each work project in college (where I majored in Theatre), it's the hammer that I'm very protective of. If you ask me if you can borrow a hammer, that is NOT the hammer I'll hand you.
Here's my card: