Outdoor:
Park (with a picnic in nicer weather!)
Soft play
Baby/toddler groups
Classes such as sensory, music, etc
Just go for a walk
Feed the ducks
Splash in puddles
Library
Indoor:
We have a lot of open ended toys (wooden rainbow, scarves, peg dolls, etc) that can cross over and lots of ways to use them
Lots of things like wooden blocks, Duplo, magnetic tiles
Arts, crafts, painting
Happy land toys
Puzzles/jigsaws
Singing with instruments/scarves/dancing and actions
My DD is a bit older now (2.5) but I'm also a SAHM. My health isn't always great so I cant overdo it. We always try to get out in the Mornings but it isn't always fun stuff. We do the food shop once a week, run errands, collect prescription from the pharmacy.
We go the library at least once a week. One local one is back doing rhyme time sessions and another will be back in the new year. Some have tables with paper/crayons to occupy them, then we chose books to take home.
We get a big bag of bird seed from pet shop, bag it up then go and Feed the ducks. Park if weather allows. Visit family or friends.
I found a recipe for homemade play doh that I'm going to try soon. Moon sand, rice, dry pasta, lentils, and so on for messy play. We get a tub with bubbles and wash her doll, animals, cars, plates.