Blue Lug, the Tokyo bike shop known for handmade accessories out of its Hatagaya store, noticed most bicycle reflectors are already triangle-shaped — just like onigiri, Japan's everyday rice ball wrapped in seaweed. So they made a reflector shaped like one: small, kawaii, and impossible to mistake for anything else clipped to your bag or bars. At 7.5cm across, it's compact but plenty visible after dark, with a sturdy strap for tying onto a bike frame, bag, or keychain. We like that it doesn't scream “safety gear” — just a small, friendly triangle that happens to glow when headlights hit it. Made in Japan.