Outdoors - Park, feed ducks, nature walks (collect things on the way to collage with when you get home), paddling pool, bike, scooter, borrow a dog to walk, play dates
Indoors - Paint, play dough, make pastry shapes/cook/paint, junk modelling, make house out of box for dolls (blue peter style), make pom pom animals, make cakes/cookies, indoor picnic +/- teddy bears, make tents, dressing up, face painting, role play games (drs/nurses etc), read stories, hide and seak, finding things around the house beginning with letters or finding things of colour groups
And more expensive - Swimming, soft play, zoo, farm, cinema, train ride, bus ride, sea side, fun fair, theme parks, aquarium