Oh, forgot to mention...
I did buy a cat bed for my kittens, in the silly belief that they would enjoy it. It's cozy and soft and it would be perfect.
I was soo wrong!
They use their cat bed as a toy! One of them runs in and hide in it, then waits for the other kitten to attack. Then they take turn hiding in there and do the same thing, over and over again!
I've only seen Sam laying in there for 10 minutes at the most. But it's a great toy, so it was not totally waste of money. Maybe they'll like it when they get older or maybe they will sleep in one of the shelves in our book cases. Who knows.
So I guess the suggestion is to move those fragil things your kittie is knocking over and make it "her place". But then again, if you do, she migth just find another good spot where she can knock over other stuff.
