Hlp - my bookshelf spkr is like humpty dumpty

Have you found a way to fasten a speaker to the stand so it won't all come crashing down when it gets bumped into? No, I'm not the klutz - it's my energetic cat.

I got the stand to be less wobbly by bolting 2 strips of metal, 1/8" by 1", to the bottom. My concern is keeping the speaker on top of the stand from falling off.

If it matters, I have Paradigm studio 40s and some cheap generic metal stands. Thanks for any advice you can give me.
Blue Tack or similar product called Fun Tack (made by DAP) available at local Home Depot or Lowe's. Fastens speakers to stands so good that the entire stand and speaker will fall before the speaker comes loose.
Don't use cheap flimsey stands. Get a solid mass loaded stand, well worth the $.
How about concrete blocks for speaker stands. Let's see your cat knock them over! Assuming you don't have a Tiger, Lynx, Bobcat :-)
If you haven't filled the stands do that to give them some heft. Clean cat litter works well. I've seen two or more foot plus long plastic tie downs connected around the speaker and stand. Not the prettiest solution but definately makes the speakers one with the stands.
I'm sorry but there are no fixes for this, I see two choices, First one is get rid of the cat and the second choice would be a new pair of floor standers!:-)
Seriously the blue tack stuff really works.
Happy Listening!