FYI, Oster made a crushed ice attachment for its blenders called the Oster Icer. It fits on the blender base, but it allows cubes to be continuously run, so that the crushed ice drops into your glass or a bowl. There is even a fine-to-coarse adjustment.
I have one. My only ding is that it’s a low-production thing. You would not be happy trying to crush ice in advance for a party.
Aloha,
Kaleo
