These are all great suggestions! But I'm with Sara.. I must have pretty well behaved cats. I have two plants in the house. I used to have more but I killed them because I forget to water them all the time. Once I caught Nutmeg chewing on it, and I squirted her with the water bottle. She didn't know it was me (her back was to me) and she thought the PLANT squirted her! So she started doing the godzilla (the stance where they sit back on their honches and swing with their two front legs at something) on the plant, and I started laughing. She started to go to chew again so I squirted again, and since she has pretty much left it alone. They all try to test me from time to time, but I am pretty consitent. Then again, I have NO clue what they do when I leave them alone on weekends!!!

Bassett eats rubber bands so I have to keep those hidden away, but I can leave stuff on the kitchen counter without worrying because they know they aren't allowed up there.

I've been able to light candles, but I just watch them the same way I would if I didn't have cats

The only thing that I can really think of is when my boyfriend comes to visit, and I'm paying attention to him and not Bassett, we have to make sure his suitcase is zipped up and off the floor, because Bassett pees in it It's her way of saying, "Mom.. look at me I'm over here! Pay attention to me!!" I also have to keep my laundry in a closet or in a hanging bag so she can't pee in that. She also will pee in boxes so I get rid of those as soon as I don't need them.