I was talking Bakelite with my favorite Etsy Bakelite girl, PetitOiseau. Chatting about vintage Bakelite trinket boxes, powder containers and such. So I went to Ebay and typed in "Bakelite Box". And of course - this is the listing that comes up for me.
Bakelite Rectal Dilators. In a box.
Something tells me this is the male version of those antique female "complexion aides".