Peek-a-prize Cat Toy

Good morning and Happy Holidays to all! Has anyone purchased the Peek-a-Prize Cat Box toy? If so, could you tell me how your cats rated it? Does it hold their attention, etc. Also, yesterday I saw a thread on a lemon filled with catnip - there was a photo of someone's cat playing with it. I would love to learn where that came from as well! Thanks!

Mine got the peek-a-prize last year and still play with it.

During the day I put their treats in it to slow them down from eating them while I am at work and saves me hiding them and finding treats weeks later they didn't