One winter, my friends took me ice skating in the chilly air of the Boston Common, a historic park with imposing statues. In the winter they set up an outdoor rink there. I had trouble using skates, but my friends glided on either side of me and off we went, very slowly.
There was another disabled kid on the ice, maybe 10 years old. His parents had fashioned a metal walker for him to hold onto as he skated, the kind with four legs used by the elderly. At the bottom of the metal legs were hollowed out tennis balls, which seemed to handle the ice rather well. The boy looked like he was having loads of fun. I was too. We both went around and around.