I would try different parks, picnics, visiting friends, sensory play at home with cereal, soup, watermelon. Put her on a set of old clothes and let her play with paint and paper. They don't need much at that age.
When you are at home try playing with her toys with her in a different way. My LG has a car that’s comes with blocks and the top lifts up to put the blocks in. Earlier we put one of her teddies in it and her teddy was driving around. Just giving things a whole new meaning to keep it a bit different. A picnic with her teddies or dolls or whatever it is just different ways to change it up a little and it will help with her imagination as well. I know it can feel boring being inside with the same things around you doing the same things x
Do you have a children’s centre near you?
Id say parks libraries and play group