Elana, I had two thoughts as I read this. The first was to put them in a box and see what happens. My second thought, which frankly, for me I liked better, was to send them to him if you have his address. No note, no "contact," no return address. He will know of course that you sent them, but I think he may honor your no contact rule if there is no comment with the package. For me, I would feel more closure knowing they are returned and not thinking about what happens in a year.
Hugs.