Jim Power, the East Village’s “Mosaic Man,” stood next to his F.D.N.Y. 9/11 tribute lamppost on Astor Place on Saturday. The lamppost, bearing Power’s memorials to 9/11 responders, including mosaics reading “FDNY” and “RIP,” was removed without notice by the Department of Transportation last month for utility work in the area. On Saturday, Power happily reported the lamppost was returned several days later, with his mosaic designs virtually intact.