Of course, Disney loves a good craze, especially one that means they can sell a wide variety of cheaply-manufactured trinkets (I'm not really bagging on them for it, if they weren't a company making money, they wouldn't also be making art. Anyway, that's a discussion for another time).
Now I'm a long way from being part of the target market for these things, but I could see why kids might think it was fun to wear a rubber band that can become shaped like Mickey Mouse or Donald Duck, like these:
Naturally, they didn't stop there, though. Now there's Disney bands shaped like princesses, Muppets, villains, Pirates, Cars cars, Toy Story toys, and lots more.
And I can even see why a kid visiting Walt Disney World would be into getting a band shaped like one of icons of the various parks, like these (though Epcot's Spaceship Earth is not terribly different than the traditional rubber band shape of "round"):
But... what are these? If you can't guess, let me show you the packaging for them.
That's right, rubber bands shaped like the various kids of transportation around Disney World... including a bus.
A bus is not a silly band. A bus is a mundane band.
Also... series 1?