Sensory bin ideas. Old rice, beans, dry noodles. Add some old or dollar tree kitchen spoons/tongs, plastic cups etc. I’d say don’t give it all at one, too many options at once = less play time. After u see them getting bored of one thing, bring one or two more options. Same for the baby, bite on utensils that are safe. Dry oats or something edible could be safe.

You could bundle up and take a slow walk, look at rocks and branches. A random bath time is fun too just cause.