I finally got out of solitary and made it to a park I could detect. One of the finds was this object about the size of a quarter. It says "Hamilton stores est. 1915" at the bottom & Yellowstone 1998 at the top. The background is a moose and pine trees. The back is plain with the name "pinnacle designs". It doesn't have a pin or fastener and it doesn't have a value so it isn't a token. I don't really know what it is. I also dug up a nice Hasbro road grader that says 1993 on the bottom.