Hi C.,
When it comes to the climbing on the coffee table, be consistant.
Climbing on the coffee table is not safe in a firm voice and down at her level, then distract her to a new direction. Or hand her a toy or something to do. At 18 months, distraction and redirection worked the best for me. My ds liked climbing over the sofa at 18 months. I would say "Ah Oh, Ah Oh, not safe and get right to his level, he would smile and I would remove him from the sofa and place him in front of a pile of blocks, put a couple together for him. If he went back to the climbing I would do it again, remove him and say not safe, not safe! and return him to something else like his blocks.
It took a few times, not once would he be able to climb the couch with out me noticing or letting him do it this time....etc.
My ds is almost 4. when he was at a younger age he liked to explore the cabnets too. I let him have the one with the tupperware in it, after I let him play with the tupperware, pots and pans he would loose interest in it after a while, the interest in the cabnet passed as soon as it arrived.
I got this from Dr. Sears ( your little one is 18 months so I am not sure if she can fully understand this but somthing to think about when it comes to the biting.
Don't bite back. "But the child needs to learn that biting hurts," you may reason. Yes, but there's no way your child will decide that she shouldn't bite if you bite. Try this alternative tooth-for-tooth method: Take your child aside and ask her to let you show her how teeth feel on skin. Press your child's forearm against her upper teeth as if she were biting herself, not in an angry revengeful way, but as a parent making a point, "See, biting hurts!" Give this lesson immediately after he bites you or someone else. You want your child to learn to be sensitive to how others feel – an early lesson in empathy.
Timeout the aggressor. "Biting hurts, and it's wrong to hurt. You are going to sit by me." Usually by two years of age the child can make the connection between being aggressive and the consequences. Encourage your child to say "I'm sorry." If he's not angry anymore, he might want to give a kiss or hug.