The best way to do this is to scope out the territory from their vantage point. You need to get down on your hands and knees when your child is a baby, and then start looking up as your baby starts walking and climbing to determine which cupboards, drawers, and other spaces might be accessible at different stages of development. Carefully lock up or move to an inaccessible spot every potential poison or other hazard such as cleaning fluids, medicines, vitamins, knives, tiny objects that can pose a choking hazard and heavy objects that will be tempting to try to pick up. Eleven children under the age of five died in these accidents. Bolt whatever you can to the wall with brackets, and push items like televisions back from the edge of furniture or move them out of reach.
Babies start pulling up on things shortly after they start crawling.
You may think that a particular piece of furniture is just too heavy for a little one to move but this pulling up action performed on a top heavy chest of drawers make it quite easy for a baby to rock the furniture just enough to start a chain reaction. A good habit to get into is to always close drawers completely then your baby will have less of an opportunity to get a good grip on these heavy pieces of furniture. Doorway safety gates are a good way to limit your baby's access to different parts of the house. Most parents consider safety gates essential safety items. Safety gates allow you to contain your little one within a certain room and to block access to dangerous stairways and rooms that are off limits such as a bathroom.