In Miraculous: Tales of Ladybug and Cat Noir, Ladybug uses her "Lucky Charm" power as a sort of finishing move. Each time she uses it, the charm turns into a different object. In one episode*, it turns into another (normal) yo-yo. In another episode**, it turns into a power strip, but she doesn't plug anything into it--she just twirls it like her yo-yo. Specifically being a powerstrip wasn't useful; another yo-yo would have been just as effective.
Why doesn't the Lucky Charm turn into the same object more than once? Is that a limitation of its powers? Are there other limitations?
*I can't remember which episode.
**I think it's Ep. 15, "Puppeteer," but I'm not sure.