Had no idea Crokinole was a local thing.

In Grade 7 it became big in our classroom. We ended up having a weekly tournament. I could never shoot the pieces reliably, so I made a tool out of K-Nex that resembled an elastic-powered pool cue inside a barrel that rested nicely on the board. I even had a slider I could adjust to "remember" the right amount of power for a given shot.

The specific rules that came with the board did not cover this, but after me absolutely crushing the first tournament it was summarily banned. This might be part of my engineer origin story.