Review on Mini Tudou 8 Pieces Stacking Cup Toy Set for Early Education - Nesting Cups, Baby Bath & Building Toys, Best Montessori Gift for Boys & Girls 6 Months+ by Jared Winebrenner

I bought this for my rabbit. He's still a baby, so he hasn't learned how to put them on yet, but they are very interesting for him (see video). I love these colors and how they tone down his neutral attitude. Please note that the colors are in a different order than the photos in the listing. I personally don't mind, but I'd like to know. They appear to be durable and hard plastic is good for this purpose (as opposed to soft silicone). I've already had other rabbit owners ask for a link. Much better than bright primary colors if you choose neutral ones! Vibration test definitely passed.