I feel like the time is coming, so I know to do all the outlet, cleaning supplies, breakables at lower levels..that kind of thing, but what else did you do that I'm sure I'll forget?
We did a foam protector on the brick hearth, outlet plugs, cabinet locks on the 2 cabinets with cleaning supplies, and a drawer lock on our knife drawer. We don't have stairs so we don't have any gates.
ETA: now that she is starting to want to climb/explore a little more, we need to attach her dresser/shelves to her bedroom wall. I really don't think she would try to climb her drawers, but she does play in her room alone for a few minutes sometimes, and I don't want to take any chances b/c her furniture is very heavy.