For stay at home working moms, how do you keep your toddlers busy while you work and no one is available to look after them?

We design our living room and balcony with our 21 mo twins in mind. Making the living room and balcony a safe place for the twins to run about and play. There are still benches and sofa in the living room but we taught them how to climb up and down safely. They have access to their toys and books. All the toys are sorted in categories, building blocks in one tray, puzzles in one, pretend play cleaning tools in one, animals kingdom in another etc. this layout allowed me to leave them alone playing while I work on my stuff in my room and yet knowing they will be safe. I will listen out for cries and take a peep every 20-30 mins or so. It has worked for us.