Plastic Door Knobs

Can you imagine a house with door knobs? How can you possibly open the doors without one? Since the time that Frankie started walking, we have baby proofed the house. We placed plastic knobs all over the house especially on the bathroom doors. He used to go in there and play with the water. He also waited till we were in the kitchen and nobody was watching him before he did his exploring all over the house. I have a cleaver little guy here with me. Well he is two, so what can I expect? Plastic knobs are also useful not only around the house but also on machines and equipments.