I remember when these first came out and I thought, I absolutely have to have one of these! Finally I was able to get my hands on this one! My favorite colors too! It has kept me busy for hours. I absolutely love it because I do suffer from extreme ADHD and medication sometimes just isnt enough. This helps me stay in one place and keep my fingers busy. I find myself focusing on the cube itself which really helps me stay in one place when I am at work. Sometimes I have to stay in one place and luckily I only need one hand to work the register so this truly has been so awesome for me. My daughter who is 4, also has the same signs for ADHD but is too young for medication, loves this cube. She loves the toggle the most. She is able to lay in her bed and watch her tablet without jumping all over the place. Incredible!