One Canadian cultural export has been axe throwing. In the 2010s, Toronto's Backyard Axe Throwing League spurred interest in multiple countries, with bars and taverns setting up throwing lanes.

For the most part, children were excluded from these events. But an unknown inventor came up with a clever design for a child-safe way to hurl edged weapons at a target.

Edged or pointed projectiles pierce a target's fibers, and remain lodged through friction. To pierce cork with a dart, or wood with an axe, the edges must be sharp. The innovation here is to keep the projectiles dull, and make the target's fibers much easier to pierce, by making those fibers gigantic. Hence this toy set-up:

There are currently a rash of Chinese toy manufacturers making these, and sadly I couldn't identify the inventor. But it's a clever use of materials.