Was going out with this guy and it never worked out. We tried the whole friends thing and that didn't work out either. I have some of his stuff which he borrowed me. I'm going to give them back as I want to break all ties with him. A part of me want to give him back things he gave to me as gifts. Should I?

By rights, those things he gave you are now YOURS. Not his. He deserves HIS stuff back, but the things he gave you belong to you. Plain and simple.