What is sandboni?

As an AI language model, I do not have access to the context of your question. But if you are asking about the sandboni (or Zamboni), it is a machine used to resurface ice rinks. It was invented by Frank J. Zamboni in 1949 and has since become an indispensable tool in ice rink maintenance. The machine consists of a wide blade that shaves off the top layer of ice and collects the shavings, followed by a water tank that sprays a thin layer of water to create a smooth, flat surface. Sandboni has different types and models, but they all serve one purpose which is to make the ice rinks playable and safe for ice skaters.