Aw, Simba sounds like a real cutie!
Wow, 22 years old. Baby was a very well cared for and well loved kitty. I'm sorry for her passing. It must have just broke your heart to lose a friend you've had all your life.
I think we've all baby-proofed our homes to some extent. It's amazing what those little buggers can get into!
The most similar thing my cats did as kittens was chase shadows on the wall. Trent would jump and even run into the wall sometimes when hubby would make hand shadows. Ophelia was smarter than that, though. She jumped at the shadow once, then looked at it and then at hubby's hand. She looked back and forth a few times, then jumped a hubby's hand instead! She figured it out pretty quick for a baby kitty.
PS - I merged your reply with your thread so no one will get confused.