Until she stops, pretend she isn't there. Pick the baby up and move her to something safe if she is doing something dangerous. This is redirecting. Remember to praise your baby for doing something that is OK after you have ignored or redirected her. A curious baby won't learn very much in a playpen.
Good parents try to prevent problems.
If your baby gets into trouble, there may be some things you could do to prevent problems until she learns to control her behavior. For example, put a gate on the stairs. Move the vase to a higher shelf. Make your baby's world interesting. If she has fun things to explore, she will be too busy to get into trouble.