Boston Mayor Martin Walsh today announced the winners of the Public Space Invitational.

The Public Space Invitational is a project of the Mayor’s Office of New Urban Mechanics. Participants were asked to design new ways to bring "function and wonderment to civic spaces," according to a press release, within a budget of $4,500.

"Boston has a vibrant art, design, and creative community. This competition is a celebration of the city’s immense talent, and the creative community’s interest in improving our city," Walsh said in a statement. "Exciting ideas came from every corner of Boston – from top design firms to a group of students from Codman Academy – this truly was an open invitation to make our civic spaces more engaging."

Winning entries included a portable reading room, which is already fully funded by a contribution from the staffing firm Robert Half and will appear on the Rose Kennedy Greenway this summer, as well as an idea called "stairs of fabulousness," which proposed decorating City Hall with rainbow stairs using non-skid tape.

Nine winners in three categories – including The Streetscape, Random Awesome Designs and City Hall – were chosen from a pool of 70 submissions. These projects will be deployed over the next year, some as early as next month.