ex boyfriend stuff

What am I supposed to do with my ex boyfriends stuff, I have clothes and stuffed animals from him. I see him at school like everyday. He has a new girlfriend after 1 months of breaking up. We were dating for 10 months and I lost my virginty to him. I gave him back the necklace he got me for Valentine's Day. He had his new girlfriend block me on everything but I know his password to everything so I don't know what to do. He said he would be my friend if I stopped hanging around the wrong group.. what am I supposed to do...