Comment by poulsbohemian

>If you have ever put a cone on a cat (which lasts about five minutes), you see they get crazy.

You got me thinking about this, as I've dealt with a number of sick kitties / foster kitties, etc but we've always used a paper plate with a hole in the middle in lieu of a purpose-made plastic cone. So thinking out loud here, our solution might not have been more generally affordable but also had the benefit of not interfering with whiskers.