How can I dress up a bike as a unicorn? Or a horse, of course. The bike has to be rideable, and needs to return to normal afterwards. Most years my city has what they call a "carnivelo", a family ride in which bikes, riders, trailers, passengers etc are encouraged to be in fancy dress and ride a car-free route. There are photos online and videos of previous years on YouTube. Some years have more fancy dress than others. This year the theme is "enchanted forest" so I thought a unicorn with 2 riders (my daughter fits better on her bike seat than in the trailer) would be suitable. We would of course be in fancy dresss ourselves. A "horse" could also pull a carriage based on the frame of the trailer with a new cover. While the event itself is traffic-free, we'd have to get there somehow, which would presumably involve riding in traffic.

In addition to my comment i wanted to provide this highly detailed artistic rendition of my idea. Make the whole bike the unicorn with you included. You could pull your princess or fairy daughter in an adorned trailer as well. The bike could be covered with a fabric or cardboard skirt with a guard so that it cant get into the wheels or moving parts. Legs could be drawn onto the side as well.

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