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?

Toddlers are like l explorerss and they have short attention span. We need to keep an eye on them. For me, I will put them in the baby cot for a short period of time if I'm busy like cooking. If writing and typing are needed, maybe get some snacks for them to eat or drawings. of course there will be messy after that. Hope these help.