My friend, who lives with me, got a can of Silly String for Christmas as a gag gift. I found out, by accident, that Missy is just terrified of this stuff. So whenever I see her getting ready to crawl into Sprout's tank, PSSSST! I blast her with Silly String.
Silly string isn’t good around cats. Some try to play with it and end up choking because they think they can eat it.
The best cat toy you can get is a Chinese yo-yo or a long feather boa on the end of a long stick. A cat can grab the toy without getting close enough to grab you.