Start by putting a 4 x 4 round plate on both the top and bottom of a 6 x 6 round plate. Slide one of the 2 x 2 round tiles (with a round hole) onto the axle. You’ll need an axle that is 3 studs long with a stud on the end.
Place the turquoise round plate on the axle. Add another 2 x 2 round tile to the axle. Attach it to the dark red round plate.
Slide a 2 x 2 round plate (with an x shaped hole) onto the top of the axle. Leave some space so that the spinner is free to turn.
We found that our spinner would spin for a longer time if we add arms. The additional weight seems to give the spinner more momentum. Place a 2 x 3 plate under the turquoise round plate. Then add a 2 x 2 plate and another 2 x 3 plate.
Add all four arms, and your spinner is ready to go! To spin it, place one finger on each side as shown below.