I found these few pieces over the last year while digging for bottles. Not sure what some of them are. I believe the taller one in the middle is an insulator or spool for a fence post. It has Knox embossed at the top. The other two I don't know. The one on the left looks like some type of wheel to me. The one on the right has a groove embedded in the side and has a hole at the end of the groove. Both sides look exactly the same. Has anyone seen any of these before?