We have a new kitchen install almost done. We went with the IKEA Skelton kitchen system that has a bunch of drawers once you open the fronts. See this picture
We ordered a bunch of these because we like the idea of a magnet key and simple install: https://www.amazon.com/gp/product/B00PV6H3Z8/
But because of the drawer placement at the top, these types of locks wont work. We preferably do not want anything on the outside of the cabinets either. If you have built an IKEA kitchen and made it safer for babies, how did you do it?