Okay, I think I got everything sorted out. While cross-checking the permanent collection database, I found a JA-RU rack toy that had escaped photographing. Fortunately, I still have my little photo studio set up, so I was able to fix this oversight.
While the back of the card on most of the JA-RU rack toys is blank, or just has the UPC barcode, this toy has instructions on how to use it! Remember that you can click on the pictures on exhibit pages to view them larger. Enjoy!