We used to go to an ice machine at night to get 25 lb.? blocks of ice so we could go ice blocking at a particular park with a hill and grass. Once you get a little dew on the grass, you throw a carpet square on top of it and slide down the hill at some speed. We also needed some "borrowed" milk crates to carry the blocks. We only did it a few times, but it was great fun until the rangers arrived one evening. Apparently, it wasn't very good for the grass. ☺️
The ice machine is still there, but I don't if it sells blocks anymore. The blocks were also very good for weekend camping with an ice chest. They melt a lot slower than bagged ice.