This chain reaction is a mix of lots of differents ideas. First, you have of course the fidget spinners because their potential is definitvely endless, combined with 3 elements (air, fire and water) and to spice it up some magnets and rubber bands tricks. I'm really happy because it's the first time I've found a way to use all 3 elements at once (except earth I know, but I can't do anything with it so it doesn't count).

It has only 38 fails caused mostly by the fire trick and the timing trick with the white spinner at the beginning.
The best strategy is to put at the beginning of the chain risky tricks (timing tricks are always risky no matter how careful you are) but easy to rebuild and I put at the end the safe tricks but harder to rebuild (for exemple the water).

- Fire : This was hard to find and it took me a lot of tests to find a way to make it work. I had either too powerful rockets that exploded the spinner making too much noise, or firecracker wicks that were too weak. I had to remove the weights from the blue spinner to make it lighter so that it can rotate despite the low force. The burning wick is beautiful with the black background and the sound is so satisfying.

- Air : the idea itself is cool, use the centrifugal force to release the marbles from the spinner. But I'm especially proud of the technique of plugging the straw with the magnet, by coincidence it's exactly the same size :)

- Water : just a big thanks to the hot glue gun that allowed me to build this complex mechanism.

Now about the yellow spinner launched at high speed with the red rubber band. The main difficulty here was how to release it, because the force on the first straw is very high because of the tension. But thanks to the help to the lever effect, to force on the second straw is much weaker, and it can be easily removed with a steel marble !

Finally I like the fact that the first trick use the orange spinner, and the last trick use the same spinner, because it's still spinning. That's why I lauched it with so much force at the beginning.