Not affiliated with the actual maker: FidgetCube from Antsy Labs. However, if you want something in the time being, feel free to get this.
You may have seen the 3.3 x 3.3 x 3.3 cm version, these 2.2 x 2.2 x 2.2 cm are smaller, but comes up with a string, helping you not lose them.
Every Stress Cube comes with six dynamic fidget features, Switch, Flow, Swivel, Compress, Soothe and Twist. Each feature is specially designed to settle uneasiness and keep you focused and stress free.
Switch allows you to turn on your attention and flip off stress. Flow is the joystick of focus letting you glide into attention. Swivel lets you spin life and dial into your desires. Compress lets you silently or loudly release stress and press on the motivation. Soothe gives you time to breath, reduce the anxiety, and wish your worries away. Twist gives you the gears and balls to roll with the punches and click into focus.
Not suitable for children under 8 years. Box is optional.