Glad to see some more realistic responses.
The way the puddle suit patrol are speaking I'm expecting us all to be running out in our thousands, desperate to jump in one of these trendy puddles before they are all splashed away.
Also, don't forget some people have disabilities which makes it hard to be able to walk for miles to keep them and their toddlers amused. Even my daughter gets fed up after 20 minutes in the local fields and wants to run over to grown men's football matches and take their footballs away. No way of stopping her other than strapping her into the buggy or picking her up and carrying her, or holding her hand and letting her sit on the floor in a tantrum. She got bored of investigating pine cones months ago too as it was my original lockdown go-to activity when we had our 20 minutes a day out. Don't think my back could handle daily helping her walk backwards up the slide for hours on end either.
Also don't forget some toddlers don't even want to do the same stuff every day- I can't speak for anyone else but I took my daughter swimming for the first time (lucky enough to have found a reasonable pool in a hotel after weeks of searching) recently and even though she absolutely loved it, we went back a couple of days later and she didn't want to go in again- at all.
As for the dream forests people are talking about- if they were that great there would be swarms of families in them all winter, gathering around a casket of mulled wine- rather than ambulances outside every couple of weeks because someone decided to commit suicide in them. I personally wouldnt feel comfortable walking alone in a secluded forest as a woman.
I'm sure it is all beautiful if you have a 6 year old to converse with or something, or who is happy to sit for hours painting or writing a story of her walk- but lonesome rain walking all winter with a toddler, who needs reining in all the time, just isn't the same as a cosy winter with local libraries and playgroups to visit where they can get variety and stimulation. Also when I imagine puddle jumping I imagine trying to stop a small child from running into the road all day long.
I'm not complaining because I'm happy with my decision to stick to indoor activities, but I'm defending the OP who might not have the same opportunities I have, because most of the things I have found to do are paid for and at least two or three miles away, and I was miserable for months until those things opened even with average summer weather. They weren't anything I had done before either. Had done the lonesome walking and playground visits to death since the lockdown started and was going insane with the lack of variety and accessible activities and communal places to help stimulate my daughter.
As for the people saying that toddler groups are more for the mums than the kids- yeah I love breaking up fights over toys for two hours solid. I do that it all for myself.
The OP was simply asking for suggestions and to be sympathised with how she feels and things being potentially even harder than the summer.
Just remember before you start judging other people for how they feel- most people create posts on here because they just want their children to be happy.